Sven Apel, Publications

2024

Timon Dörzapf, Norman Peitek, Marvin Wyrich, and Sven Apel. Data Analysis Tools Affect Outcomes of Eye-Tracking Studies. In Proceedings of the International Symposium on Empirical Software Engineering and Measurement (ESEM). ACM, October 2024. Acceptance rate: 24% (34 / 139); to appear.
Kallistos Weis, Leopoldo Motta Teixeira, Clemens Dubslaff, and Sven Apel. Blackbox Observability of Features and Feature Interactions. In Proceedings of the International Conference on Automated Software Engineering (ASE). ACM, October 2024. Acceptance rate: 27% (155 / 568); to appear.
Fabian Schiebel, Florian Sattler, Philipp Dominik Schubert, Sven Apel, and Eric Bodden. Scaling Interprocedural Static Data-Flow Analysis to Large C/C++ Applications. In Proceedings of the European Conference on Object-Oriented Programming (ECOOP), volume 313 of LIPIcs, page 37. Schloss Dagstuhl – Leibniz-Zentrum für Informatik, September 2024.
Roman Haas, Raphael Nömmer, Elmar Jürgens, and Sven Apel. Optimization of Automated and Manual Software Tests in Industrial Practice: A Survey and Historical Analysis. IEEE Transactions on Software Engineering (TSE), 50(8):2005–2020, August 2024.
Marvin Wyrich and Sven Apel. Evidence Tetris in the Pixelated World of Validity Threats. In 2024 IEEE/ACM International Workshop on Methodological Issues with Empirical Studies in Software Engineering (WSESE '24), pages 1–4, April 2024.
Clemens Dubslaff, Kallistos Weis, Christel Baier, and Sven Apel. Feature Causality. Journal of Systems and Software (JSS), 209(3):111915, March 2024.
Gustavo do Vale, Heitor Costa, and Sven Apel. Predicting Merge Conflicts Considering Social and Technical Assets. Empirical Software Engineering (EMSE), 29(1):24, February 2024.

2023

Thomas Bock, Nils Alznauer, Mitchell Joblin, and Sven Apel. Automatic Core-Developer Identification on GitHub: A Validation Study. ACM Transactions on Software Engineering and Methodology (TOSEM), 32(6):138, November 2023.
Christian Kaltenecker, Stefan Mühlbauer, Alexander Grebhahn, Norbert Siegmund, and Sven Apel. Performance Evolution of Configurable Software Systems: An Empirical Study. Empirical Software Engineering (EMSE), 28(6):152, November 2023.
Gustavo do Vale, Eduardo Fernandes, Eduardo Figueiredo, and Sven Apel. Behind Developer Contributions on Conflicting Merge Scenarios. In Proceedings of the International Working Conference on Source Code Analysis and Manipulation (SCAM), pages 25–36. IEEE, October 2023. Acceptance rate: 42% (19 / 45).
Florian Sattler, Sebastian Böhm, Philipp Schubert, Norbert Siegmund, and Sven Apel. SEAL: Integrating Program Analysis and Repository Mining. ACM Transactions on Software Engineering and Methodology (TOSEM), 32(5):121, September 2023.
Mitchell Joblin, Barbara Eckl-Ganser, Thomas Bock, Angelika Schmid, Janet Siegmund, and Sven Apel. Hierarchical and Hybrid Organizational Structures in Open-Source Software Projects: A Longitudinal Study. ACM Transactions on Software Engineering and Methodology (TOSEM), 32(4):86, July 2023.
Max Weber, Christian Kaltenecker, Florian Sattler, Sven Apel, and Norbert Siegmund. Twins or False Friends? A Study on Energy Consumption and Performance of Configurable Software. In Proceedings of the International Conference on Software Engineering (ICSE), pages 2098–2110. IEEE, May 2023. Acceptance rate: 26% (209 / 796).
Stefan Mühlbauer, Florian Sattler, Christian Kaltenecker, Johannes Dorn, Sven Apel, and Norbert Siegmund. Analyzing the Impact of Workloads on Modeling the Performance of Configurable Software Systems. In Proceedings of the International Conference on Software Engineering (ICSE), pages 2085–2097. IEEE, May 2023. Acceptance rate: 26% (209 / 796).
Kewen Peng, Christian Kaltenecker, Norbert Siegmund, Sven Apel, and Tim Menzies. VEER: Enhancing the Interpretability of Model-based Optimizations. Empirical Software Engineering (EMSE), 28(3):61, April 2023.
Christof Tinnes, Timo Kehrer, Mitchell Joblin, Uwe Hohenstein, Andreas Biesdorf, and Sven Apel. Mining Domain-Specific Edit Operations from Model Repositories with Applications to Semantic Lifting of Model Differences and Change Profiling. Automated Software Engineering, 30(2):17, April 2023.
Johannes Dorn, Sven Apel, and Norbert Siegmund. Mastering Uncertainty in Performance Estimations of Configurable Software Systems. Empirical Software Engineering (EMSE), 28(2):33, January 2023.

2022

Gustavo do Vale, Claus Hunsen, Eduardo Figueiredo, and Sven Apel. Challenges of Resolving Merge Conflicts: A Mining and Survey Study. IEEE Transactions on Software Engineering (TSE), 48(12):4964–4985, December 2022.
Georg Seibt, Florian Heck, Guilherme Cavalcanti, Paulo Borba, and Sven Apel. Leveraging Structure in Software Merge: An Empirical Study. IEEE Transactions on Software Engineering (TSE), 48(11):4590–4610, November 2022.
Norman Peitek, Annabelle Bergum, Maurice Rekrut, Jonas Mucke, Matthias Nadig, Chris Parnin, Janet Siegmund, and Sven Apel. Correlates of Programmer Efficacy and their Link to Experience: A Combined EEG and Eye-Tracking Study. In Proceedings of the ACM Joint European Software Engineering Conference and Symposium on the Foundations of Software Engineering (ESEC/FSE), pages 120–131. ACM, November 2022. Acceptance rate: 22% (99 / 449).
Christof Tinnes, Wolfgang Rössler, Uwe Hohenstein, Torsten Kühn, Andreas Biesdorf, and Sven Apel. Sometimes You Have to Treat the Symptoms: Tackling Model Drift in an Industrial Clone-and-Own Software Product Line. In Proceedings of the European Software Engineering Conference and the ACM SIGSOFT International Symposium on the Foundations of Software Engineering (ESEC/FSE), pages 1355–1366. ACM, November 2022. Industry Track. Acceptance rate: 38% (32 / 84).
Wolfgang Mauerer, Mitchell Joblin, Damian Tamburri, Carlos Paradis, Rick Kazman, and Sven Apel. In Search of Socio-Technical Congruence: A Large-Scale Longitudinal Study. IEEE Transactions on Software Engineering (TSE), 48(8):3159–3184, August 2022.
Mitchell Joblin and Sven Apel. How Do Successful and Failed Projects Differ? A Socio-Technical Analysis. ACM Transactions on Software Engineering and Methodology (TOSEM), 31(4):67, July 2022.
Thomas Bock, Claus Hunsen, Mitchell Joblin, and Sven Apel. Synchronous Development in Open-Source Projects: A Higher-Level Perspective. Automated Software Engineering, 29(1):3, May 2022. Online version at SharedIt.
Miguel Velez, Pooyan Jamshidi, Norbert Siegmund, Sven Apel, and Christian Kästner. On Debugging the Performance of Configurable Software Systems: Developer Needs and Tailored Tool Support. In Proceedings of the International Conference on Software Engineering (ICSE), pages 1571–1583. ACM, May 2022. Acceptance rate: 26% (197 / 751).
Clemens Dubslaff, Kallistos Weis, Christel Baier, and Sven Apel. Causality in Configurable Software Systems. In Proceedings of the International Conference on Software Engineering (ICSE), pages 325–337. ACM, May 2022. Acceptance rate: 26% (197 / 751).
Sven Apel, Christian Kästner, and Eunsuk Kang. Feature Interactions on Steroids: On the Composition of ML Models. IEEE Software, 39(3):120–124, May 2022.
Thomas Bock, Angelika Schmid, and Sven Apel. Measuring and Modeling Group Dynamics in Open-Source Software Development: A Tensor Decomposition Approach. ACM Transactions on Software Engineering and Methodology (TOSEM), 31(2):19, April 2022.
Norbert Siegmund, Johannes Dorn, Max Weber, Christian Kaltenecker, and Sven Apel. Green Configuration: Can AI Help in Reducing Energy Consumption of Configurable Software Systems?. IEEE Computer, 55(3):74–81, March 2022.
Aleksandar Dimovski, Sven Apel, and Axel Legay. Several Lifted Abstract Domains for Static Analysis of Numerical Program Families. Science of Computer Programming (SCP), 213(1):102725, January 2022. Online version at ScienceDirect.

2021

Christof Tinnes, Timo Kehrer, Mitchell Joblin, Uwe Hohenstein, Andreas Biesdorf, and Sven Apel. Learning Domain-Specific Edit Operations from Model Repositories with Frequent Subgraph Mining. In Proceedings of the International Conference on Automated Software Engineering (ASE), pages 930–942. IEEE, November 2021. Acceptance rate: 20% (82 / 414).
Roman Haas, Daniel Elsner, Elmar Jürgens, Alexander Pretschner, and Sven Apel. How Can Manual Testing Processes Be Optimized?. In Proceedings of the European Software Engineering Conference and the ACM SIGSOFT International Symposium on the Foundations of Software Engineering (ESEC/FSE), pages 1281–1291. ACM, August 2021. Industry Track. Acceptance rate: 39% (23 / 59).
Johannes Lampel, Sascha Just, Sven Apel, and Andreas Zeller. When Life Gives You Oranges: Detecting and Diagnosing Intermittent Job Failures at Mozilla. In Proceedings of the European Software Engineering Conference and the ACM SIGSOFT International Symposium on the Foundations of Software Engineering (ESEC/FSE), pages 1381–1382. ACM, August 2021. Industry Track. Acceptance rate: 39% (23 / 59).
Aleksandar Dimovski and Sven Apel. Lifted Static Analysis of Dynamic Program Families by Abstract Interpretation. In Proceedings of the European Conference on Object-Oriented Programming (ECOOP), volume 194 of LIPIcs, page 14. Schloss Dagstuhl – Leibniz-Zentrum für Informatik, July 2021. Acceptance rate: 39% (22 / 56).
José da Costa, Rohit Gheyi, Márcio Ribeiro, Sven Apel, Vander Alves, Baldoino Fonseca, Flávio Medeiros, and Alessandro Garcia. Evaluating Refactorings for Disciplining #ifdef Annotations: An Eye Tracking Study with Novices. Empirical Software Engineering (EMSE), 26(5):92, July 2021. Online version at SharedIt.
Miguel Velez, Pooyan Jamshidi, Norbert Siegmund, Sven Apel, and Christian Kästner. White-Box Analysis over Machine Learning: Modeling Performance of Configurable Systems. In Proceedings of the International Conference on Software Engineering (ICSE), pages 1072–1084. IEEE, May 2021. Acceptance rate: 23% (138 / 602).
Norman Peitek, Sven Apel, Chris Parnin, André Brechmann, and Janet Siegmund. Program Comprehension and Code Complexity Metrics: An fMRI Study. In Proceedings of the International Conference on Software Engineering (ICSE), pages 524–536. IEEE, May 2021. Acceptance rate: 23% (138 / 602); ACM SIGSOFT Distinguished Paper Award.
Max Weber, Sven Apel, and Norbert Siegmund. White-Box Performance-Influence Models: A Profiling and Learning Approach. In Proceedings of the International Conference on Software Engineering (ICSE), pages 1059–1071. IEEE, May 2021. Acceptance rate: 23% (138 / 602).
Aleksandar Dimovski, Sven Apel, and Axel Legay. Program Sketching using Lifted Analysis for Numerical Program Families. In Proceedings of the NASA Formal Methods Symposium (NFM), LNCS, pages 95–112. Springer, May 2021.
Christian Kästner, Eunsuk Kang, and Sven Apel. Feature Interactions on Steroids: On the Composition of ML Models. Computing Research Repository (CoRR), Number 2105.06449, May 2021.
Thiago Castro, Leopoldo Teixeira, Vander Alves, Sven Apel, Maxime Cordy, and Rohit Gheyi. A Formal Framework of Software Product Line Analyses. ACM Transactions on Software Engineering and Methodology (TOSEM), 30(3):34, April 2021.
Alexander Grebhahn, Christian Kaltenecker, Christian Engwer, Norbert Siegmund, and Sven Apel. Lightweight, Semi-Automatic Variability Extraction: A Case Study on Scientific Computing. Empirical Software Engineering (EMSE), 26(2):23, March 2021.
Aleksandar Dimovski, Sven Apel, and Axel Legay. A Decision Tree Lifted Domain for Analyzing Program Families with Numerical Features. In Proceedings of the International Conference on Fundamental Approaches to Software Engineering (FASE), volume 12649 of LNCS, pages 67–86. Springer, March 2021.
Leonardo Passos, Rodrigo Queiroz, Mukelabai Mukelabai, Thorsten Berger, Sven Apel, Krzysztof Czarnecki, and Jesus Alejandro Padilla. A Study of Feature Scattering in the Linux Kernel. IEEE Transactions on Software Engineering (TSE), 47(1):146–164, January 2021.
Janet Siegmund, Norman Peitek, Sven Apel, and Norbert Siegmund. Mastering Variation in Human Studies: The Role of Aggregation. ACM Transactions on Software Engineering and Methodology (TOSEM), 30(1):2, January 2021.

2020

Miguel Velez, Pooyan Jamshidi, Florian Sattler, Norbert Siegmund, Sven Apel, and Christian Kästner. ConfigCrusher: Towards White-Box Performance Analysis for Configurable Systems. Automated Software Engineering, 27(3–4):265–300, December 2020. Online version at SharedIt.
Claus Hunsen, Janet Siegmund, and Sven Apel. On the Fulfillment of Coordination Requirements in Open-Source Software Projects: An Exploratory Study. Empirical Software Engineering (EMSE), 25(6):4379–4426, November 2020. Online version at SharedIt.
Dan Gopstein, Anne-Laure Fayard, Sven Apel, and Justin Cappos. Thinking Aloud About Confusing Code: A Qualitative Investigation of Program Comprehension and Atoms of Confusion. In Proceedings of the ACM Joint European Software Engineering Conference and Symposium on the Foundations of Software Engineering (ESEC/FSE), pages 605–616. ACM, November 2020. Acceptance rate: 28% (101 / 360).
Norman Peitek, Janet Siegmund, and Sven Apel. What Drives the Reading Order of Programmers? An Eye Tracking Study. In Proceedings of the International Conference on Program Comprehension (ICPC), pages 342–353. ACM, October 2020. Acceptance rate: 38% (32 / 84).
Flavio Medeiros, Marcio Ribeiro, Rohit Gheyi, Larissa Braz, Christian Kästner, Sven Apel, and Kleber Santos. An Empirical Study on Configuration-Related Code Weaknesses. In Proceedings of the Brazilian Symposium on Software Engineering (SBES), pages 193–202. ACM, October 2020.
Stefan Mühlbauer, Sven Apel, and Norbert Siegmund. Identifying Software Performance Changes Across Variants and Versions. In Proceedings of the International Conference on Automated Software Engineering (ASE), pages 611–622. ACM, September 2020. Acceptance rate: 23% (93 / 408).
Johannes Dorn, Sven Apel, and Norbert Siegmund. Mastering Uncertainty in Performance Estimations of Configurable Software Systems. In Proceedings of the International Conference on Automated Software Engineering (ASE), pages 684–696. ACM, September 2020. Acceptance rate: 23% (93 / 408).
Christian Lengauer, Sven Apel, Matthias Bolten, Shigeru Chiba, Ulrich Rüde, Jürgen Teich, Armin Größlinger, Frank Hannig, Harald Köstler, Lisa Claus, Alexander Grebhahn, Stefan Groth, Stefan Kronawitter, Sebastian Kuckuk, Hannah Rittich, Christian Schmitt, and Jonas Schmitt. ExaStencils: Advanced Multigrid Solver Generation. In Software for Exascale Computing – SPPEXA 2016-2019, volume 136 of LNCSE, pages 405–452. Springer, July 2020.
Vivek Nair, Zhe Yu, Tim Menzies, Norbert Siegmund, and Sven Apel. Finding Faster Configurations using FLASH. IEEE Transactions on Software Engineering (TSE), 46(7):794–811, July 2020.
Christian Kaltenecker, Alexander Grebhahn, Norbert Siegmund, and Sven Apel. The Interplay of Sampling and Machine Learning for Software Performance Prediction. IEEE Software, 37(4):58–66, July 2020.
Janet Siegmund, Norman Peitek, André Brechmann, Chris Parnin, and Sven Apel. Studying Programming in the Neuroage: Just a Crazy Idea?. Communications of the ACM (CACM), 63(6):30–34, June 2020.
Norman Peitek, Janet Siegmund, Sven Apel, Christian Kästner, Chris Parnin, Anja Bethmann, Thomas Leich, Gunter Saake, and André Brechmann. A Look into Programmers' Heads. IEEE Transactions on Software Engineering (TSE), 46(4):442–462, April 2020.
Eneias Silva, Alessandro Leite, Vander Alves, and Sven Apel. ExpRunA: A Domain-Specific Approach for Technology-Oriented Experiments. Software and Systems Modeling (SoSyM), 19(2):493–526, March 2020. Online first at SharedIt.
Roman Haas, Rainer Niedermayer, Tobias Roehm, and Sven Apel. Is Static Analysis Able to Identify Unnecessary Source Code?. ACM Transactions on Software Engineering and Methodology (TOSEM), 29(1):6, March 2020.
Gustavo do Vale, Angelika Schmid, Alcemir Rodrigues Santos, Eduardo Santana de Almeida, and Sven Apel. On the Relation Between GitHub Communication Activity and Merge Conflicts. Empirical Software Engineering (EMSE), 25(1):402–433, January 2020. Online version at SharedIt.
Johannes Dorn, Sven Apel, and Norbert Siegmund. Generating Attributed Variability Models for Transfer Learning. In Proceedings of the International Working Conference on Variability Modelling of Software-Intensive Systems (VaMoS), page 5. ACM, January 2020.

2019

Alcemir Rodrigues Santos, Ivan do Carmo Machado, Eduardo Santana de Almeida, Janet Siegmund, and Sven Apel. Comparing the Influence of Using Feature-Oriented Programming and Conditional Compilation on Comprehending Feature-Oriented Software. Empirical Software Engineering (EMSE), 24(3):1226–1258, 2019. Online version at SharedIt.
Thomas Thüm, André van Hoorn, Sven Apel, Johannes Bürdek, Sinem Getir, Robert Heinrich, Reiner Jung, Matthias Kowal, Malte Lochau, Ina Schaefer, and Jürgen Walter. Performance Analysis Strategies for Software Variants and Versions. In Managed Software Evolution, pages 175–206. Springer, 2019.
Andreas Simbürger, Sven Apel, Armin Größlinger, and Christian Lengauer. PolyJIT: Polyhedral Optimization Just in Time. International Journal of Parallel Programming (IJPP), 47(5–6):874–906, December 2019.
Guilherme Cavalcanti, Paulo Borba, Georg Seibt, and Sven Apel. The Impact of Structure on Software Merging: Semistructured versus Structured Merge. In Proceedings of the International Conference on Automated Software Engineering (ASE), pages 1002–1013. IEEE, November 2019. Acceptance rate (full papers): 25% (93 / 373).
Stefan Mühlbauer, Sven Apel, and Norbert Siegmund. Accurate Modeling of Performance Histories for Evolving Software Systems. In Proceedings of the International Conference on Automated Software Engineering (ASE), pages 640–652. IEEE, November 2019. Acceptance rate (full papers): 25% (93 / 373).
Flávio Medeiros, Gabriel Lima, Guilherme Amaral, Sven Apel, Christian Kästner, Márcio Ribeiro, and Rohit Gheyi. An Investigation of Misunderstanding Code Patterns in C Open-Source Software Projects. Empirical Software Engineering (EMSE), 24(4):1693–1726, August 2019. Online version at SharedIt.
Sergiy Kolesnikov, Norbert Siegmund, Christian Kästner, and Sven Apel. On the Relation of Control-flow and Performance Feature Interactions: A Case Study. Empirical Software Engineering (EMSE), 24(4):2410–2437, August 2019.
Sergiy Kolesnikov, Norbert Siegmund, Christian Kästner, Alexander Grebhahn, and Sven Apel. Tradeoffs in Modeling Performance of Highly-Configurable Software Systems. Software and Systems Modeling (SoSyM), 18(3):2265–2283, June 2019.
Christian Kaltenecker, Alexander Grebhahn, Norbert Siegmund, Jianmei Guo, and Sven Apel. Distance-Based Sampling of Software Configuration Spaces. In Proceedings of the International Conference on Software Engineering (ICSE), pages 1084–1094. IEEE, May 2019. Acceptance rate: 21% (109 / 529).
Catia Trubiani and Sven Apel. PLUS: Performance Learning for Uncertainty of Software. In Proceedings of the International Conference on Software Engineering (ICSE), pages 77–80. IEEE, May 2019. NIER Track; acceptance rate: 27% (25 / 92).
Jennifer Bauer, Janet Siegmund, Norman Peitek, Johannes Hofmeister, and Sven Apel. Indentation: Simply a Matter of Style or Support for Program Comprehension?. In Proceedings of the International Conference on Program Comprehension (ICPC), pages 154–164. IEEE, May 2019.
Norman Peitek, Sven Apel, André Brechmann, Chris Parnin, and Janet Siegmund. CodersMUSE: Multi-Modal Data Exploration of Program-Comprehension Experiments. In Proceedings of the International Conference on Program Comprehension (ICPC), pages 126–129. IEEE, May 2019.
Stefan Ganser, Armin Größlinger, Norbert Siegmund, Sven Apel, and Christian Lengauer. Speeding up Iterative Polyhedral Schedule Optimization with Surrogate Performance Models. ACM Transactions on Architecture and Code Optimization (TACO), 15(4):56, January 2019. Open access. Presented at HiPEAC 2019.

2018

Alexander von Rhein, Jörg Liebig, Andreas Janker, Christian Kästner, and Sven Apel. Variability-Aware Static Analysis at Scale: An Empirical Study. ACM Transactions on Software Engineering and Methodology (TOSEM), 27(4):18, November 2018.
Norman Peitek, Janet Siegmund, Chris Parnin, Sven Apel, Johannes Hofmeister, and André Brechmann. Simultaneous Measurement of Program Comprehension with fMRI and Eye Tracking: A Case Study. In Proceedings of the International Symposium on Empirical Software Engineering and Measurement (ESEM), page 24. ACM, October 2018. Acceptance rate: 18% (30 / 164).
Marvin Hanisch, Carolin Häussler, Stefan Berreiter, and Sven Apel. Developers' Progression from Periphery to Core in the Linux Kernel Development Project. Academy of Management Proceedings, 2018(1):14263, July 2018. Best Paper Award.
Jianmei Guo, Dingyu Yang, Norbert Siegmund, Sven Apel, Atrisha Sarkar, Pavel Valov, Krzysztof Czarnecki, Andrzej Wasowski, and Huiqun Yu. Data-Efficient Performance Learning for Configurable Systems. Empirical Software Engineering (EMSE), 23(3):1826–1867, June 2018.
Norman Peitek, Janet Siegmund, Chris Parnin, Sven Apel, and André Brechmann. Beyond Gaze: Preliminary Analysis of Pupil Dilation and Blink Rates in an fMRI Study of Program Comprehension. In Proceedings of the International Workshop on Eye Movements in Programming (EMIP), page 4. ACM, June 2018.
Norman Peitek, Janet Siegmund, Chris Parnin, Sven Apel, and André Brechmann. Toward Conjoint Analysis of Simultaneous Eye-Tracking and fMRI Data for Program-Comprehension Studies. In Proceedings of the International Workshop on Eye Movements in Programming (EMIP), page 1. ACM, June 2018.
Flavio Medeiros, Marcio Ribeiro, Rohit Gheyi, Sven Apel, Christian Kästner, Bruno Ferreira, Luiz Carvalho, and Baldoino Fonseca. Discipline Matters: Refactoring of Preprocessor Directives in the #ifdef Hell. IEEE Transactions on Software Engineering (TSE), 44(5):453–469, May 2018.
Vivek Nair, Tim Menzies, Norbert Siegmund, and Sven Apel. Faster Discovery of Faster System Configurations with Spectral Learning. Automated Software Engineering, 25(2):247–277, May 2018. Online version at SharedIt.
Florian Sattler, Alexander von Rhein, Thorsten Berger, Niklas Schalck Johansson, Mikael Mark Hardø, and Sven Apel. Lifting Inter-App Data-Flow Analysis to Large App Sets. Automated Software Engineering, 25(2):315–346, May 2018. Online version at SharedIt.
Olaf Leßenich, Janet Siegmund, Sven Apel, Christian Kästner, and Claus Hunsen. Indicators for Merge Conflicts in the Wild: Survey and Empirical Study. Automated Software Engineering, 25(2):279–313, May 2018. Online version at SharedIt.
Claire Le Goues, Yuriy Brun, Sven Apel, Emery Berger, Sarfrad Khurshid, and Yannis Smaragdakis. Effectiveness of Anonymization in Double-Blind Review. Communications of the ACM (CACM), 61(6):30–33, May 2018.
Sven Apel. Understanding Organizational Evolution of Software Projects (Keynote). In Proceedings of Software Engineering und Software Management – Fachtagung des GI-Fachbereichs Softwaretechnik, LNI, pages 25–26. GI, March 2018.
André Lanna, Thiago Castro, Vander Alves, Genaina Rodrigues, Pierre-Yves Schobbens, and Sven Apel. Feature-Family-Based Reliability Analysis of Software Product Lines. Information and Software Technology (IST), Volume 94, pages 59–81, February 2018.
Thiago Castro, André Lanna, Vander Alves, Leopoldo Teixeira, Sven Apel, and Pierre-Yves Schobbens. All Roads Lead to Rome: Commuting Strategies for Product-Line Reliability Analysis. Science of Computer Programming, Volume 152, pages 116–160, January 2018.
Vivek Nair, Zhe Yu, Tim Menzies, Norbert Siegmund, and Sven Apel. Finding Faster Configurations using FLASH. Computing Research Repository (CoRR), Number 1801.02175, January 2018.

2017

Sergiy Kolesnikov, Norbert Siegmund, Christian Kästner, and Sven Apel. On the Relation of External and Internal Feature Interactions: A Case Study. Computing Research Repository (CoRR), Number 1701.08106, December 2017.
Olaf Leßenich, Sven Apel, Christian Kästner, Georg Seibt, and Janet Siegmund. Renaming and Shifted Code in Structured Merging: Looking Ahead for Precision and Performance. In Proceedings of the International Conference on Automated Software Engineering (ASE), pages 543–553. IEEE, November 2017. Acceptance rate (full papers): 21% (67 / 322).
Alexander Grebhahn, Carmen Rodrigo, Norbert Siegmund, Francisco J. Gaspar, and Sven Apel. Performance-Influence Models of Multigrid Methods: A Case Study on Triangular Meshes. Concurrency and Computation: Practice and Experience, 29(17):4057, September 2017. Special Issue on Advanced Stencil-Code Engineering.
Alexander Grebhahn, Christian Engwer, Matthias Bolten, and Sven Apel. Variability of Stencil Computations for Porous Media. Concurrency and Computation: Practice and Experience, 29(17):4119, September 2017. Special Issue on Advanced Stencil-Code Engineering.
Stefan Ganser, Armin Größlinger, Norbert Siegmund, Sven Apel, and Christian Lengauer. Iterative Schedule Optimization for Parallelization in the Polyhedron Model. ACM Transactions on Architecture and Code Optimization (TACO), 14(3):23, September 2017. Presented at HiPEAC 2018.
Vivek Nair, Tim Menzies, Norbert Siegmund, and Sven Apel. Using Bad Learners to find Good Configurations. In Proceedings of the European Software Engineering Conference and the ACM SIGSOFT International Symposium on the Foundations of Software Engineering (ESEC/FSE), pages 257–267. ACM, September 2017. Acceptance rate: 24% (72 / 295).
Norbert Siegmund, Stefan Sobernig, and Sven Apel. Attributed Variability Models: Outside the Comfort Zone. In Proceedings of the European Software Engineering Conference and the ACM SIGSOFT International Symposium on the Foundations of Software Engineering (ESEC/FSE), pages 268–278. ACM, September 2017. Acceptance rate: 24% (72 / 295).
Janet Siegmund, Norman Peitek, Chris Parnin, Sven Apel, Johannes Hofmeister, Christian Kästner, Andrew Begel, Anja Bethmann, and André Brechmann. Measuring Neural Efficiency of Program Comprehension. In Proceedings of the European Software Engineering Conference and the ACM SIGSOFT International Symposium on the Foundations of Software Engineering (ESEC/FSE), pages 140–150. ACM, September 2017. Acceptance rate: 24% (72 / 295).
Mitchell Joblin, Sven Apel, and Wolfgang Mauerer. Evolutionary Trends of Developer Coordination: A Network Approach. Empirical Software Engineering (EMSE), 22(4):2050–2094, August 2017. Online version at SharedIt.
Jörg Liebig, Sven Apel, Andreas Janker, Florian Garbe, and Sebastian Oster. Handling Static Configurability in Refactoring Engines. IEEE Computer, 50(7):44–53, July 2017.
Mitchell Joblin, Sven Apel, Claus Hunsen, and Wolfgang Mauerer. Classifying Developers into Core and Peripheral: An Empirical Study on Count and Network Metrics. In Proceedings of the International Conference on Software Engineering (ICSE), pages 164–174. IEEE, May 2017. Acceptance rate: 16% (68 / 415).
Rodrigo Queiroz, Leonardo Passos, Marco Tulio Valente, Claus Hunsen, Sven Apel, and Krzysztof Czarnecki. The Shape of Feature Code: An Analysis of Twenty C-Preprocessor-Based Systems. Software and Systems Modeling (SoSyM), 16(1):77–96, February 2017. Online version at SharedIt.
Vivek Nair, Tim Menzies, Norbert Siegmund, and Sven Apel. Using Bad Learners to find Good Configurations. Computing Research Repository (CoRR), Number 1702.05701, February 2017.
Sven Apel. The New Feature Interaction Challenge (Keynote). In Proceedings of the International Workshop on Variability Modelling of Software-intensive Systems (VaMoS), page 1. ACM, February 2017.
Vivek Nair, Tim Menzies, Norbert Siegmund, and Sven Apel. Faster Discovery of Faster System Configurations with Spectral Learning. CoRR, Number 1701.08106, January 2017.

2016

Sven Apel, Dirk Beyer, Vitaly Mordan, Vadim Mutilin, and Andreas Stahlbauer. On-The-Fly Decomposition of Specifications in Software Model Checking. In Proceedings of the ACM SIGSOFT International Symposium on the Foundations of Software Engineering (FSE), pages 349–361. ACM, November 2016. Acceptance rate: 27% (74 / 273).
Alexander Grebhahn, Norbert Siegmund, Harald Köstler, and Sven Apel. Performance Prediction of Multigrid-Solver Configurations. In Software for Exascale Computing – SPPEXA 2013–2015, volume 113 of LNCSE, pages 69–88. Springer, September 2016.
Gabriel Ferreira, Momin Malik, Christian Kästner, Jürgen Pfeffer, and Sven Apel. Do #ifdefs Influence the Occurrence of Vulnerabilities? An Empirical Study of the Linux Kernel. In Proceedings of the International Software Product Line Conference (SPLC), pages 65–73. ACM, September 2016. Acceptance rate (full papers): 39% (17 / 44).
Stefan Sobernig, Sven Apel, Sergiy Kolesnikov, and Norbert Siegmund. Quantifying Structural Attributes of System Decompositions in 28 Feature-oriented Software Product Lines: An Exploratory Study. Empirical Software Engineering (EMSE), 21(4):1670–1705, August 2016.
Leonardo Passos, Leopoldo Teixeira, Nicolas Dintzner, Sven Apel, Andrzej Wasowski, Krzysztof Czarnecki, Paulo Borba, and Jianmei Guo. Coevolution of Variability Models and Related Software Artifacts: A Fresh Look at Evolution Patterns in the Linux Kernel. Empirical Software Engineering (EMSE), 21(4):1744–1793, August 2016. Online version at SharedIt.
Gabriel Ferreira, Momin M. Malik, Christian Kästner, Jürgen Pfeffer, and Sven Apel. Do #ifdefs Influence the Occurrence of Vulnerabilities? An Empirical Study of the Linux Kernel. Computing Research Repository (CoRR), Number 1605.07032, June 2016.
Barbara Paech, Sven Apel, Lars Grunske, and Christian Prehofer. Empirische Forschung zu Software-Evolution: Bestandsaufnahme und Vision aus dem DFG-Schwerpunktprogramm Design for Future – Managed Software Evolution. Informatik-Spektrum, 39(3):186–193, May 2016.
Flávio Medeiros, Christian Kästner, Márcio Ribeiro, Rohit Gheyi, and Sven Apel. A Comparison of 10 Sampling Algorithms for Configurable Systems. In Proceedings of the International Conference on Software Engineering (ICSE), pages 643–654. ACM, May 2016. Acceptance rate: 19% (101 / 530).
Mitchell Joblin, Sven Apel, Claus Hunsen, and Wolfgang Mauerer. Classifying Developers into Core and Peripheral: An Empirical Study on Count and Network Metrics. Computing Research Repository (CoRR), Number 1604.00830, May 2016.
Claus Hunsen, Bo Zhang, Janet Siegmund, Christian Kästner, Olaf Leßenich, Martin Becker, and Sven Apel. Preprocessor-Based Variability in Open-Source and Industrial Software Systems: An Empirical Study. Empirical Software Engineering (EMSE), 21(2):449–482, April 2016.
Bruno Cafeo, Claus Hunsen, Alessandro Garcia, Sven Apel, and Jaejoon Lee. Segregating Feature Interfaces to Support Software Product Line Maintenance. In Proceedings of the International Conference on Modularity (MODULARITY), pages 1–12. ACM, March 2016. Acceptance rate: 37% (10 / 27).
Sven Apel. From Crosscutting Concerns to Feature Interactions: A Tale of Misunderstandings and Enlightenments (Keynote). In Companion Proceedings of the International Conference on Modularity, page 2. ACM, March 2016.
Flávio Medeiros, Christian Kästner, Márcio Ribeiro, Rohit Gheyi, and Sven Apel. A Comparison of 10 Sampling Algorithms for Configurable Systems. Computing Research Repository (CoRR), Number 1602.02052, March 2016.
Alexander von Rhein, Thomas Thüm, Ina Schaefer, Jörg Liebig, and Sven Apel. Variability Encoding: From Compile-Time to Load-Time Variability. Journal of Logical and Algebraic Methods in Programming (JLAMP), 85(1):125–145, January 2016.

2015

Atri Sarkar, Jianmei Guo, Norbert Siegmund, Sven Apel, and Krzysztof Czarnecki. Cost-Efficient Sampling for Performance Prediction of Configurable Systems. In Proceedings of the International Conference on Automated Software Engineering (ASE), pages 342–352. IEEE, November 2015. Acceptance rate (full papers): 21% (60 / 289).
Andreas Wölfl, Norbert Siegmund, Sven Apel, Harald Kosch, Johann Krautlager, and Guillermo Weber-Urbina. Generating Qualifiable Avionics Software: An Experience Report. In Proceedings of the International Conference on Automated Software Engineering (ASE), pages 726–736. IEEE, November 2015. Acceptance rate (full papers): 21% (60 / 289).
Mitchell Joblin, Sven Apel, and Wolfgang Mauerer. Evolutionary Trends of Developer Coordination: A Network Approach. Computing Research Repository (CoRR), Number 1510.06988, November 2015.
Olaf Leßenich, Sven Apel, and Christian Lengauer. Balancing Precision and Performance in Structured Merge. Automated Software Engineering, 22(3):367–397, September 2015.
Alexander von Rhein, Thorsten Berger, Niklas Schalck Johansson, Mikael Mark Hardø, and Sven Apel. Lifting Inter-App Data-Flow Analysis to Large App Sets. Technical Report MIP-1504, Department of Informatics and Mathematics, University of Passau, September 2015.
Norbert Siegmund, Alexander Grebhahn, Sven Apel, and Christian Kästner. Performance-Influence Models for Highly Configurable Systems. In Proceedings of the European Software Engineering Conference and the ACM SIGSOFT International Symposium on the Foundations of Software Engineering (ESEC/FSE), pages 284–294. ACM, August 2015. Acceptance rate: 25% (74 / 291).
Jens Dörre, Sven Apel, and Christian Lengauer. Modeling and Optimizing MapReduce Programs. Concurrency and Computation: Practice and Experience, 27(7):1734–1766, May 2015.
Mitchell Joblin, Wolfgang Mauerer, Sven Apel, Janet Siegmund, and Dirk Riehle. From Developer Networks to Verified Communities: A Fine-Grained Approach. In Proceedings of the International Conference on Software Engineering (ICSE), pages 563–573. IEEE, May 2015. Acceptance rate: 19% (84 / 452).
Janet Siegmund, Norbert Siegmund, and Sven Apel. Views on Internal and External Validity in Empirical Software Engineering. In Proceedings of the International Conference on Software Engineering (ICSE), pages 9–19. IEEE, May 2015. Acceptance rate: 19% (84 / 452); ACM SIGSOFT Distinguished Paper Award.
Alexander von Rhein, Alexander Grebhahn, Sven Apel, Norbert Siegmund, Dirk Beyer, and Thorsten Berger. Presence-Condition Simplification in Highly Configurable Systems. In Proceedings of the International Conference on Software Engineering (ICSE), pages 178–188. IEEE, May 2015. Acceptance rate: 19% (84 / 452).
Jörg Liebig, Andreas Janker, Florian Garbe, Sven Apel, and Christian Lengauer. Morpheus: Variability-Aware Refactoring in the Wild. In Proceedings of the International Conference on Software Engineering (ICSE), pages 380–391. IEEE, May 2015. Acceptance rate: 19% (84 / 452).
Johannes Bürdek, Malte Lochau, Stefan Bauregger, Andreas Holzer, Alexander von Rhein, Sven Apel, and Dirk Beyer. Facilitating Reuse in Multi-Goal Test-Suite Generation for Software Product Lines. In Proceedings of the International Conference on Fundamental Approaches to Software Engineering (FASE), volume 9033 of LNCS, pages 84–99. Springer, April 2015. Acceptance rate (23 / 82): 28%.
Leonardo Passos, Jesus Padilla, Thorsten Berger, Sven Apel, Krzysztof Czarnecki, and Marco Tulio Valente. Feature Scattering in the Large: A Longitudinal Study of Linux Kernel Device Drivers. In Proceedings of the International Conference on Modularity (MODULARITY), pages 81–92. ACM, March 2015. Acceptance rate: 48% (12 / 25). Best Paper Award.

2014

Christian Lengauer, Sven Apel, Matthias Bolten, Armin Größlinger, Frank Hannig, Harald Köstler, Ulrich Rüde, Jürgen Teich, Alexander Grebhahn, Stefan Kronawitter, Sebastian Kuckuk, Hannah Rittich, and Christian Schmitt. ExaStencils: Advanced Stencil-Code Engineering. In Luis Lopes et al., editors, Euro-Par 2014: Parallel Processing Workshops, Part II, volume 8806 of LNCS, pages 553–564. Springer, 2014.
Sven Apel, Joanne M. Atlee, Luciano Baresi, and Pamela Zave. Feature Interactions: The Next Generation (Dagstuhl Seminar 14281). Dagstuhl Reports, 4(7):1–24, November 2014.
Janet Siegmund, Christian Kästner, Jörg Liebig, Sven Apel, and Stefan Hanenberg. Measuring and Modeling Programming Experience. Empirical Software Engineering (EMSE), 19(5):1299–1334, October 2014. ICPC Most Influential Paper Award 2022.
Eric Walkingshaw, Christian Kästner, Martin Erwig, Sven Apel, and Eric Bodden. Variational Data Structures: Exploring Tradeoffs in Computing with Variability. In Proceedings of the ACM Symposium on New Ideas in Programming and Reflections on Software (Onward!), pages 213–226. ACM, October 2014. Acceptance rate: 46% (16 / 35).
Sergiy Kolesnikov, Judith Roth, and Sven Apel. On the Relation Between Internal and External Feature Interactions in Feature-oriented Product Lines: A Case Study. In Proceedings of the International Workshop on Feature-Oriented Software Development (FOSD), pages 1–8. ACM, September 2014.
Jianmei Guo, Edward Zulkoski, Rafael Olaechea, Derek Rayside, Krzysztof Czarnecki, Sven Apel, and Joanne Atlee. Scaling Exact Multi-Objective Combinatorial Optimization by Parallelization. In Proceedings of the International Conference on Automated Software Engineering (ASE), pages 409–420. ACM, September 2014. Acceptance rate: 20% (55 / 276).
Alexander Grebhahn, Sebastian Kuckuk, Christian Schmitt, Harald Köstler, Norbert Siegmund, Sven Apel, Frank Hannig, and Jürgen Teich. Experiments on Optimizing the Performance of Stencil Codes with SPL Conqueror. Parallel Processing Letters, 24(3):1441001, September 2014.
Rodrigo Queiroz, Leonardo Passos, Marco T. Valente, Sven Apel, and Krzysztof Czarnecki. Does Feature Scattering Follow Power-law Distributions?: An Investigation of Five Pre-processor-based Systems. In Proceedings of the International Workshop on Feature-Oriented Software Development (FOSD), pages 23–29. ACM, September 2014.
Janet Siegmund and Sven Apel. The Human Factor in Computer Science and How to Teach Students to Care: An Experience Report. In Social Informatics – The Social Impact of Interactions between Humans and IT, Springer Proceedings in Complexity, pages 13–21. Springer, August 2014.
Janet Siegmund, Christian Kästner, Sven Apel, Chris Parnin, Anja Bethmann, and André Brechmann. Understanding Programmers' Brains with fMRI. Frontiers in Neuroinformatics, August 2014. Conference Abstract.
Stefan Sobernig, Sven Apel, Sergiy Kolesnikov, and Norbert Siegmund. Quantifying Structural Attributes of System Decompositions in 28 Feature-oriented Software Product Lines: An Exploratory Study. Technical Report 2014/01, Institute for Information Systems and New Media, WU Vienna University of Economics and Business, July 2014.
Thomas Thüm, Sven Apel, Christian Kästner, Ina Schaefer, and Gunter Saake. A Classification and Survey of Analysis Strategies for Software Product Lines. ACM Computing Surveys (CSUR), 47(1):6, June 2014.
Christian Lengauer, Sven Apel, Matthias Bolten, Armin Größlinger, Frank Hannig, Harald Köstler, Ulrich Rüde, Jürgen Teich, Alexander Grebhahn, Stefan Kronawitter, Sebastian Kuckuk, Hannah Rittich, and Christian Schmitt. ExaStencils: Advanced Stencil-Code Engineering – First Project Report. Technical Report MIP-1401, Department of Computer Science and Mathematics, University of Passau, June 2014. 12 pages.
Janet Siegmund, Christian Kästner, Sven Apel, Chris Parnin, Anja Bethmann, Thomas Leich, Gunter Saake, and André Brechmann. Understanding Understanding Source Code with Functional Magnetic Resonance Imaging. In Proceedings of the International Conference on Software Engineering (ICSE), pages 378–389. ACM, May 2014. Acceptance rate: 20% (99 / 495).
Norbert Siegmund, Sergiy Kolesnikov, Christian Kästner, Sven Apel, Don Batory, Marko Rosenmüller, and Gunter Saake. Performance Prediction in the Presence of Feature Interactions. In Proceedings of Software Engineering – Fachtagung des GI-Fachbereichs Softwaretechnik, LNI, pages 33–34. GI, February 2014.
Alexander Grebhahn, Norbert Siegmund, Sven Apel, Sebastian Kuckuk, Christian Schmitt, and Harald Köstler. Optimizing Performance of Stencil Code with SPL Conqueror. In Proceedings of the International Workshop on High-Performance Stencil Computations (HiStencils), pages 7–14. www.epubli.de, January 2014.
Sven Apel, Matthias Bolten, Armin Größlinger, Franz Hannig, Harald Köstler, Christian Lengauer, Ulrich Rüde, and Jürgen Teich. ExaStencils: Advanced Stencil-Code Engineering. inSiDE, 12(2):60–63, 2014.

2013

Sven Apel, Dirk Beyer, Karlheinz Friedberger, Franco Raimondi, and Alexander von Rhein. Domain Types: Selecting Abstractions Based on Variable Usage. Computing Research Repository (CoRR), Number 1305.6640, December 2013.
Jens Dörre, Sven Apel, and Christian Lengauer. Modeling and Optimizing MapReduce Programs. Technical Report MIP-1304, Department of Computer Science and Mathematics, University of Passau, December 2013.
Jianmei Guo, Krzysztof Czarnecki, Sven Apel, Norbert Siegmund, and Andrzej Wasowski. Variability-Aware Performance Prediction: A Statistical Learning Approach. In Proceedings of the International Conference on Automated Software Engineering (ASE), pages 301–311. IEEE, November 2013. Acceptance rate (full papers): 16% (51 / 317).
Andreas Simbürger, Sven Apel, Armin Größlinger, and Christian Lengauer. The Potential of Polyhedral Optimization: An Empirical Study. In Proceedings of the International Conference on Automated Software Engineering (ASE), pages 508–518. IEEE, November 2013. Acceptance rate (full papers): 16% (51 / 317).
Sven Apel, Dirk Beyer, Karlheinz Friedberger, Franco Raimondi, and Alexander von Rhein. Domain Types: Abstract-Domain Selection Based on Variable Usage. In Proceedings of the Haifa Verification Conference (HVC), volume 8244 of LNCS, pages 262–278. Springer, November 2013. Acceptance rate: 47% (23 / 49).
Sven Apel, Don Batory, Christian Kästner, and Gunter Saake. Feature-Oriented Software Product Lines: Concepts and Implementation. Springer, October 2013. 315 pages, ISBN 978-3-642-37520-0.
Sandro Schulze, Jörg Liebig, Janet Siegmund, and Sven Apel. Does the Discipline of Preprocessor Annotations Matter? A Controlled Experiment. In Proceedings of the International Conference on Generative Programming: Concepts & Experiences (GPCE), pages 65–74. ACM, October 2013. Acceptance rate (full papers): 30% (17 / 57). GPCE Most Influential Paper Award 2023.
Norbert Siegmund, Alexander von Rhein, and Sven Apel. Family-Based Performance Measurement. In Proceedings of the International Conference on Generative Programming: Concepts & Experiences (GPCE), pages 95–104. ACM, October 2013. Acceptance rate (full papers): 30% (17 / 57).
Sergiy Kolesnikov, Alexander von Rhein, Claus Hunsen, and Sven Apel. A Comparison of Product-based, Feature-based, and Family-based Type Checking. In Proceedings of the International Conference on Generative Programming: Concepts & Experiences (GPCE), pages 115–124. ACM, October 2013. Acceptance rate (full papers): 30% (17 / 57).
Sven Apel, Sergiy Kolesnikov, Norbert Siegmund, Christian Kästner, and Brady Garvin. Exploring Feature Interactions in the Wild: The New Feature-Interaction Challenge. In Proceedings of the International Workshop on Feature-Oriented Software Development (FOSD), pages 1–8. ACM, October 2013.
Sven Apel, Alexander von Rhein, Thomas Thüm, and Christian Kästner. Feature-Interaction Detection based on Feature-Based Specifications. Computer Networks, 57(12):2399–2409, August 2013.
Jörg Liebig, Alexander von Rhein, Christian Kästner, Sven Apel, Jens Dörre, and Christian Lengauer. Scalable Analysis of Variable Software. In Proceedings of the European Software Engineering Conference and the ACM SIGSOFT International Symposium on the Foundations of Software Engineering (ESEC/FSE), pages 81–91. ACM, August 2013. Acceptance rate: 20% (51 / 251).
Dave Clarke, Ina Schaefer, Maurice ter Beek, Sven Apel, and Joanne Atlee. Formal Methods and Analysis in Software Product Line Engineering: 4th Edition of FMSPLE Workshop Series. In Proceedings of the International Software Product Line Conference (SPLC), pages 266–267. ACM, August 2013.
Janet Feigenspan, Christian Kästner, Sven Apel, Jörg Liebig, Michael Schulze, Raimund Dachselt, Maria Papendieck, Thomas Leich, and Gunter Saake. Do Background Colors Improve Program Comprehension in the #ifdef Hell?. Empirical Software Engineering (EMSE), 18(4):699–745, July 2013.
Thomas Thüm, Sven Apel, Andreas Zelend, Reimar Schröter, and Bernhard Möller. Subclack: Feature-Oriented Programming with Behavioral Feature Interfaces. International Workshop on MechAnisms for SPEcialization, Generalization and inHerItance (MASPEGHI), co-located with ECOOP'13, July 2013.
Sven Apel, Alexander von Rhein, Philipp Wendler, Armin Größlinger, and Dirk Beyer. Strategies for Product-Line Verification: Case Studies and Experiments. In Proceedings of the International Conference on Software Engineering (ICSE), pages 482–491. IEEE, May 2013. Acceptance rate: 19% (85 / 461).
Jianmei Guo, Krzysztof Czarnecki, Sven Apel, Norbert Siegmund, and Andrezj Wasowski. Why CART Works for Variability-Aware Performance Prediction? An Empirical Study on Performance Distributions. Technical Report GSDLAB-TR-2013-04-02, Generative Software Development Laboratory, University of Waterloo, April 2013.
Norbert Siegmund, Marko Rosenmüller, Christian Kästner, Paolo Giarrusso, Sven Apel, and Sergiy Kolesnikov. Scalable Prediction of Non-functional Properties in Software Product Lines: Footprint and Memory Consumption. Information and Software Technology (IST), 55(3):491–507, March 2013.
Andreas Simbürger, Sven Apel, Armin Größlinger, and Christian Lengauer. The Potential of Polyhedral Optimization. Technical Report MIP-1301, Department of Informatics and Mathematics, University of Passau, March 2013. 10 pages.
Janet Siegmund, Christian Kästner, Sven Apel, André Brechmann, and Gunter Saake. Experience from Measuring Program Comprehension—Toward a General Framework. In Proceedings of Software Engineering – Fachtagung des GI-Fachbereichs Softwaretechnik, LNI, pages 239–257. GI, February 2013.
Sven Apel, Christian Kästner, and Christian Lengauer. Language-Independent and Automated Software Composition: The FeatureHouse Experience. IEEE Transactions on Software Engineering (TSE), 39(1):63–79, January 2013.
Alexander von Rhein, Sven Apel, Christian Kästner, Thomas Thüm, and Ina Schaefer. The PLA Model: On the Combination of Product-Line Analyses. In Proceedings of the International Workshop on Variability Modelling of Software-intensive Systems (VaMoS), pages 73–80. ACM, January 2013.
Jörg Liebig, Sven Apel, and Rolf Daniel. Feature-Oriented Language Families: A Case Study. In Proceedings of the International Workshop on Variability Modelling of Software-intensive Systems (VaMoS), pages 53–60. ACM, January 2013.
Leonardo Passos, Krzysztof Czarnecki, Sven Apel, Andrzej Wasowski, Christian Kästner, Jianmei Guo, and Claus Hunsen. Feature Oriented Software Evolution. In Proceedings of the International Workshop on Variability Modelling of Software-intensive Systems (VaMoS), pages 95–102. ACM, January 2013.
Sergiy Kolesnikov, Sven Apel, Norbert Siegmund, Stefan Sobernig, Christian Kästner, and Semah Senkaya. Predicting Quality Attributes of Software Product Lines Using Software and Network Measures and Sampling. In Proceedings of the International Workshop on Variability Modelling of Software-intensive Systems (VaMoS), pages 25–29. ACM, January 2013.
Christian Kästner and Sven Apel. Feature-Oriented Software Development. In Generative and Transformational Techniques in Software Engineering IV, volume 7680 of LNCS, pages 346–382. Springer, January 2013.

2012

Janet Siegmund, André Brechmann, Sven Apel, Christian Kästner, Jörg Liebig, Thomas Leich, and Gunter Saake. Toward Measuring Program Comprehension with Functional Magnetic Resonance Imaging. In Proceedings of the ACM SIGSOFT International Symposium on the Foundations of Software Engineering (FSE), page 24. ACM, November 2012. NIER Track; acceptance rate: 20% (12 / 59).
Jörg Liebig, Alexander von Rhein, Christian Kästner, Sven Apel, Jens Dörre, and Christian Lengauer. Large-Scale Variability-Aware Type Checking and Dataflow Analysis. Technical Report MIP-1212, Department of Informatics and Mathematics, University of Passau, November 2012.
Norbert Siegmund, Marko Rosenmüller, Martin Kuhlemann, Christian Kästner, Sven Apel, and Gunter Saake. SPL Conqueror: Toward Optimization of Non-functional Properties in Software Product Lines. Software Quality Journal – Special Issue on Quality Engineering for Software Product Lines, 20(3–4):487–517, September 2012.
Sven Apel, Olaf Leßenich, and Christian Lengauer. Structured Merge with Auto-Tuning: Balancing Precision and Performance. In Proceedings of the International Conference on Automated Software Engineering (ASE), pages 120–129. ACM, September 2012. Acceptance rate: 13% (21/167).
Thomas Thüm, Ina Schaefer, Sven Apel, and Martin Hentschel. Family-Based Theorem Proving for Deductive Verification of Software Product Lines. In Proceedings of the International Conference on Generative Programming and Component Engineering (GPCE), pages 11–20. ACM, September 2012. Acceptance rate: 40% (14 / 35).
Janet Siegmund, Christian Kästner, Jörg Liebig, and Sven Apel. Comparing Program Comprehension of Physically and Virtually Separated Concerns . In Proceedings of the International Workshop on Feature-Oriented Software Development (FOSD), pages 17–24. ACM, September 2012.
Christian Kästner, Alexander von Rhein, Sebastian Erdweg, Jonas Pusch, Sven Apel, Tillmann Rendel, and Klaus Ostermann. Toward Variability-Aware Testing. In Proceedings of the International Workshop on Feature-Oriented Software Development (FOSD), pages 1–8. ACM, September 2012.
Jianmei Guo, Krzysztof Czarnecki, Sven Apel, Norbert Siegmund, and Andrezj Wasowski. Variability-Aware Performance Modeling: A Statistical Learning Approach. Technical Report GSDLAB-TR-2012-08-18, Generative Software Development Laboratory, University of Waterloo, August 2012.
Christian Kästner, Sven Apel, Thomas Thüm, and Gunter Saake. Type Checking Annotation-Based Product Lines. ACM Transactions on Software Engineering and Methodology (TOSEM), 21(3):14, June 2012.
Norbert Siegmund, Sergiy Kolesnikov, Christian Kästner, Sven Apel, Don Batory, Marko Rosenmüller, and Gunter Saake. Predicting Performance via Automated Feature-Interaction Detection. In Proceedings of the International Conference on Software Engineering (ICSE), pages 167–177. IEEE, June 2012. Acceptance rate: 21% (87 / 408).
Janet Feigenspan, Christian Kästner, Jörg Liebig, Sven Apel, and Stefan Hanenberg. Measuring Programming Experience. In Proceedings of the International Conference on Program Comprehension (ICPC), pages 73–82. IEEE, June 2012. Acceptance rate: 41% (21 / 51); ICPC Most Influential Paper Award 2022.
Thomas Thüm, Sven Apel, Christian Kästner, Martin Kuhlemann, Ina Schaefer, and Gunter Saake. Analysis Strategies for Software Product Lines. Technical Report FIN-004-2012, School of Computer Science, University of Magdeburg, April 2012.
Sven Apel, Sergiy Kolesnikov, Jörg Liebig, Christian Kästner, Martin Kuhlemann, and Thomas Leich. Access Control in Feature-Oriented Programming. Science of Computer Programming – Special Issue on Feature-Oriented Software Development, 77(3):174–187, March 2012.
Sven Apel, Julia Lawall, and Christian Lengauer (editors). Special Section: Feature-Oriented Software Development (FOSD 2009). Science of Computer Programming, 77(3):129–188, March 2012.
Thomas Thüm, Ina Schaefer, Martin Kuhlemann, Sven Apel, and Gunter Saake. Applying Design by Contract to Feature-Oriented Programming. In Proceedings of the International Conference on Fundamental Approaches to Software Engineering (FASE), volume 7212 of LNCS, pages 255–269. Springer, March 2012. Acceptance rate: 25% (33 / 134).

2011

Martin Kuhlemann, Christian Kästner, Sven Apel, and Gunter Saake. An Algebra for Refactoring and Feature-Oriented Programming. Technical Report FIN-006-2011, University of Magdeburg, Germany, 2011.
Sven Apel, Hendrik Speidel, Philipp Wendler, Alexander von Rhein, and Dirk Beyer. Feature-Aware Verification. Computing Research Repository (CoRR), Number 1110.0021, December 2011.
Sven Apel, Hendrik Speidel, Philipp Wendler, Alexander von Rhein, and Dirk Beyer. Detection of Feature Interactions using Feature-Aware Verification. In Proceedings of the International Conference on Automated Software Engineering (ASE), pages 372–375. IEEE, November 2011. Acceptance rate (short papers): 22% (56 / 252).
Alexander von Rhein, Sven Apel, and Franco Raimondi. Introducing Binary Decision Diagrams in the Explicit-State Verification of Java Code. Java Pathfinder Workshop (co-located with ASE'11), November 2011.
Marko Rosenmüller, Norbert Siegmund, Mario Pukall, and Sven Apel. Tailoring Dynamic Software Product Lines. In Proceedings of the International Conference on Generative Programming and Component Engineering (GPCE), pages 3–12. ACM, October 2011. Acceptance rate: 31% (18 / 58).
Janet Feigenspan, Sven Apel, Jörg Liebig, and Christian Kästner. Exploring Software Measures to Assess Program Comprehension. In Proceedings of the International Symposium on Empirical Software Engineering and Measurement (ESEM), pages 1–10, paper 3. IEEE, September 2011. Acceptance rate: 31% (33 / 105).
Sven Apel, Jörg Liebig, Benjamin Brandl, Christian Lengauer, and Christian Kästner. Semistructured Merge: Rethinking Merge in Revision Control Systems. In Proceedings of the European Software Engineering Conference and the ACM SIGSOFT International Symposium on the Foundations of Software Engineering (ESEC/FSE), pages 190–200. ACM, September 2011. Acceptance rate: 17% (34 / 203).
Norbert Siegmund, Marko Rosenmüller, Christian Kästner, Paolo Giarrusso, Sven Apel, and Sergiy Kolesnikov. Scalable Prediction of Non-functional Properties in Software Product Lines. In Proceedings of the Software Product Line Conference (SPLC), pages 160–169. IEEE, August 2011. Acceptance rate: 29% (20 / 69). Best Research Paper Award.
Sven Apel, Florian Heidenreich, Christian Kästner, and Marko Rosenmüller. Third International Workshop on Feature-Oriented Software Development (FOSD 2011). In Proceedings of the International Software Product Line Conference (SPLC), pages 337–338. IEEE, August 2011.
Wolfgang Scholz, Thomas Thüm, Sven Apel, and Christian Lengauer. Automatic Detection of Feature Interactions using the Java Modeling Language: An Experience Report. In Proceedings of the International Workshop on Feature-Oriented Software Development (FOSD), page 7. ACM, August 2011.
Christian Kästner, Sven Apel, and Klaus Ostermann. The Road to Feature Modularity? . In Proceedings of the International Workshop on Feature-Oriented Software Development (FOSD), page 5. ACM, August 2011.
Christian Lengauer and Sven Apel. Feature-Oriented System Design and Engineering. International Journal of Software and Informatics (IJSI), 5(1–2, Part II):231–244, July 2011. Special Issue on Foundations and Practice of Systems and Software Engineering, Festschrift in Honor of Manfred Broy.
Jens Dörre, Sven Apel, and Christian Lengauer. Static Type Checking of Hadoop MapReduce Programs. In Proceedings of the Second International Workshop on MapReduce and its Applications (MapReduce), pages 17–24. ACM, June 2011.
Sven Apel and Dirk Beyer. Feature Cohesion in Software Product Lines: An Exploratory Study. In Proceedings of the International Conference on Software Engineering (ICSE), pages 421–430. ACM, May 2011. Acceptance rate: 14% (62 / 441).
Michael Stengel, Janet Feigenspan, Mathias Frisch, Christian Kästner, Sven Apel, and Raimund Dachselt. View Infinity: A Zoomable Interface for Feature-Oriented Software Development. In Proceedings of the International Conference on Software Engineering (ICSE), pages 1031–1033. ACM, May 2011. Acceptance rate: 37% (22 / 60); tool demo.
Sven Apel, William Cook, Krzysztof Czarnecki, and Oscar Nierstrasz. Feature-Oriented Software Development (FOSD) (Dagstuhl Seminar 11021). Dagstuhl Reports, 1(1), May 2011.
Jörg Liebig, Christian Kästner, and Sven Apel. Analyzing the Discipline of Preprocessor Annotations in 30 Million Lines of C Code. In Proceedings of the International Conference on Aspect-Oriented Software Development (AOSD), pages 191–202. ACM, March 2011. Acceptance rate: 23% (21 / 92).
Marko Rosenmüller, Norbert Siegmund, Sven Apel, and Gunter Saake. Flexible Feature Binding in Software Product Lines. Automated Software Engineering, 18(2):163–197, March 2011.
Thomas Thüm, Ina Schaefer, Martin Kuhlemann, and Sven Apel. Proof Composition for Deductive Verification of Software Product Lines. In Proceedings of the International Conference on Software Testing, Verification, and Validation Workshops (VAST'11 Workshop), pages 270–277. IEEE, March 2011.
Marko Rosenmüller, Norbert Siegmund, Mario Pukall, and Sven Apel. Combining Runtime Adaptation and Static Binding in Dynamic Software Product Lines. Technical Report 02, Fakultät für Informatik, Otto-von-Guericke-Universität Magdeburg, February 2011.

2010

Sven Apel, Wolfgang Scholz, Christian Lengauer, and Christian Kästner. Detecting Dependences and Interactions in Feature-Oriented Design. In Proceedings of the IEEE International Symposium on Software Reliability Engineering (ISSRE), pages 161–170. IEEE, November 2010. Acceptance rate: 31% (40 / 130).
Sven Apel, Christian Lengauer, Bernhard Möller, and Christian Kästner. An Algebraic Foundation for Automatic Feature-Based Program Synthesis. Science of Computer Programming, 75(11):1022–1047, November 2010.
Sandro Schulze, Sven Apel, and Christian Kästner. Code Clones in Feature-Oriented Software Product Lines. In Proceedings of the International Conference on Generative Programming and Component Engineering (GPCE), pages 103–112. ACM, October 2010. Acceptance rate: 31% (18 / 59).
Sven Apel, Wolfgang Scholz, Christian Lengauer, and Christian Kästner. Language-Independent Reference Checking in Software Product Lines. In Proceedings of the International Workshop on Feature-Oriented Software Development (FOSD), pages 65–71. ACM, October 2010.
Norbert Siegmund, Marko Rosenmüller, and Sven Apel. Automating Energy Optimization with Features. In Proceedings of the International Workshop on Feature-Oriented Software Development (FOSD), pages 2–9. ACM, October 2010.
Ina Schaefer, Martin Becker, Ralf Carbon, and Sven Apel. 1st International Workshop on Formal Methods in Software Product Line Engineering (FMSPLE 2010). In Proceedings of the International Software Product Line Conference (SPLC), volume 6287 of LNCS, page 526. Springer, September 2010.
Sven Apel, Christian Kästner, Armin Größlinger, and Christian Lengauer. Type Safety for Feature-Oriented Product Lines. Automated Software Engineering, 17(3):251–300, September 2010.
Janet Feigenspan, Christian Kästner, Mathias Frisch, Raimund Dachselt, and Sven Apel. Visual Support for Understanding Product Lines. In Proceedings of the IEEE International Conference on Program Comprehension (ICPC), pages 34–35. IEEE, July 2010. Tool demo.
Friedrich Steimann, Thomas Pawlitzki, Sven Apel, and Christian Kästner. Types and Modularity for Implicit Invocation with Implicit Announcement. ACM Transactions on Software Engineering and Methodology (TOSEM), 20(1):1, June 2010.
Martin Kuhlemann, Christian Kästner, and Sven Apel. Reducing Code Replication in Delegation-Based Java Programs. In Java Software and Embedded Systems, pages 171–183. Nova Science Publishers, Inc., May 2010.
Sven Apel and DeLesley Hutchins. A Calculus for Uniform Feature Composition. ACM Transactions on Programming Languages and Systems (TOPLAS), 32(5):19, May 2010.
Jörg Liebig, Sven Apel, Christian Lengauer, Christian Kästner, and Michael Schulze. An Analysis of the Variability in Forty Preprocessor-Based Software Product Lines. In Proceedings of the International Conference on Software Engineering (ICSE), pages 105–114. ACM, May 2010. Acceptance rate: 14% (52 / 380).
Christian Kästner, Sven Apel, and Gunter Saake. Virtuelle Trennung von Belangen (Präprozessor 2.0). In Proceedings of Software Engineering – Fachtagung des GI-Fachbereichs Softwaretechnik, number P-159 in LNI, pages 165–176. GI, February 2010. Acceptance rate: 36% (17 / 47).
Sven Apel. How AspectJ is Used: An Analysis of Eleven AspectJ Programs. Journal of Object Technology (JOT), 9(1):117–142, January 2010.
Martin Kuhlemann, Norbert Siegmund, and Sven Apel. Using Collaborations to Encapsulate Features? An Explorative Study. In Proceedings of the International Workshop on Variability Modelling of Software-intensive Systems (VaMoS), pages 139–142. University of Duisburg-Essen, January 2010.
Norbert Siegmund, Martin Kuhlemann, Sven Apel, and Mario Pukall. Optimizing Non-functional Properties of Software Product Lines by means of Refactorings. In Proceedings of the International Workshop on Variability Modelling of Software-intensive Systems (VaMoS), pages 115–122. University of Duisburg-Essen, January 2010.
Sven Apel, Jörg Liebig, Christian Lengauer, Christian Kästner, and William Cook. Semistructured Merge in Revision Control Systems. In Proceedings of the International Workshop on Variability Modelling of Software-intensive Systems (VaMoS), pages 13–19. University of Duisburg-Essen, January 2010.

2009

Marko Rosenmüller, Sven Apel, Thomas Leich, and Gunter Saake. Tailor-Made Data Management for Embedded Systems: A Case Study on Berkeley DB. Data & Knowledge Engineering (DKE), 68(12):1493–1512, December 2009.
Sven Apel, Christian Kästner, Armin Größlinger, and Christian Lengauer. Type-Safe Feature-Oriented Product Lines. Computing Research Repository (CoRR), Number 1001.3604, December 2009.
Christian Kästner, Sven Apel, and Martin Kuhlemann. A Model of Refactoring Physically and Virtually Separated Features. In Proceedings of the International Conference on Generative Programming and Component Engineering (GPCE), pages 157–166. ACM, October 2009. Acceptance rate: 31% (19 / 62).
Sven Apel, Jörg Liebig, Christian Kästner, Martin Kuhlemann, and Thomas Leich. An Orthogonal Access Modifier Model for Feature-Oriented Programming. In Proceedings of the International Workshop on Feature-Oriented Software Development (FOSD), pages 26–32. ACM, October 2009.
Marko Rosenmüller, Norbert Siegmund, Gunter Saake, and Sven Apel. Combining Static and Dynamic Feature Binding in Software Product Lines. Technical Report FIN-013-2009, School of Computer Science, University of Magdeburg, October 2009.
Janet Feigenspan, Christian Kästner, Sven Apel, and Thomas Leich. How to Compare Program Comprehension in FOSD Empirically – An Experience Report. In Proceedings of the International Workshop on Feature-Oriented Software Development (FOSD), pages 52–59. ACM, October 2009.
Jörg Liebig, Sven Apel, Christian Lengauer, and Thomas Leich. RobbyDBMS – A Case Study on Hardware/Software Product Line Engineering. In Proceedings of the International Workshop on Feature-Oriented Software Development (FOSD), pages 60–65. ACM, October 2009.
Syed Saif ur Rahman, Marko Rosenmüller, Norbert Siegmund, Sagar Sunkle, Gunter Saake, and Sven Apel. Data Management for Embedded Systems: A Cell-based Approach. In Proceedings of the International Workshop on Embedded Data-Centric Systems (EDACS), pages 9–13. IEEE, September 2009.
Martin Kuhlemann, Don Batory, and Sven Apel. Refactoring Feature Modules. In Proceedings of the International Conference on Software Reuse (ICSR), volume 5791 of LNCS, pages 106–115. Springer, September 2009. Acceptance rate: 41% (28 / 68).
Christian Kästner and Sven Apel. Virtual Separation of Concerns – A Second Chance for Preprocessors. Journal of Object Technology (JOT), 8(6):59–68, September 2009.
Christian Kästner, Sven Apel, Syed Saif ur Rahman, Marko Rosenmüller, Don Batory, and Gunter Saake. On the Impact of the Optional Feature Problem: Analysis and Case Studies. In Proceedings of the International Software Product Line Conference (SPLC), pages 181–190. Software Engineering Institute, Carnegie Mellon University, August 2009. Acceptance rate: 36% (30 / 83).
Syed Saif ur Rahman, Marko Rosenmüller, Norbert Siegmund, Gunter Saake, and Sven Apel. Specialized Embedded DBMS: Cell Based Approach. In Proceedings of the International Workshop on Database and Expert Systems Application (DEXA), pages 9–13. IEEE, August 2009.
Sven Apel, Christian Kästner, Armin Größlinger, and Christian Lengauer. Feature (De)composition in Functional Programming. In Proceedings of the International Conference on Software Composition (SC), number 5634 in LNCS, pages 9–26. Springer, July 2009. Acceptance rate: 33% (10 / 30).
Stefan Boxleitner, Sven Apel, and Christian Kästner. Language-Independent Quantification and Weaving for Feature Composition. In Proceedings of the International Conference on Software Composition (SC), number 5634 in LNCS, pages 45–54. Springer, July 2009. Acceptance rate: 33% (10 / 30).
Sven Apel, Florian Janda, Salvador Trujillo, and Christian Kästner. Model Superimposition in Software Product Lines. In Proceedings of the International Conference on Model Transformation (ICMT), volume 5563 of LNCS, pages 4–19. Springer, July 2009. Acceptance rate: 21% (14 / 67).
Sven Apel and Christian Kästner. An Overview of Feature-Oriented Software Development. Journal of Object Technology (JOT), 8(5):49–84, July 2009.
Christian Kästner, Sven Apel, Salvador Trujillo, Martin Kuhlemann, and Don Batory. Guaranteeing Syntactic Correctness for all Product Line Variants: A Language-Independent Approach. In Proceedings of the International Conference on Objects, Models, Components, Patterns (TOOLS EUROPE), volume 33 of LNBIP, pages 174–194. Springer, June 2009. Acceptance rate: 28% (19 / 67).
Sven Apel, Christian Kästner, and Christian Lengauer. FeatureHouse: Language-Independent, Automated Software Composition. In Proceedings of the International Conference on Software Engineering (ICSE), pages 221–231. IEEE, May 2009. Acceptance rate: 12% (50 / 405).
Christian Kästner, Thomas Thüm, Gunter Saake, Janet Feigenspan, Thomas Leich, Fabian Wielgorz, and Sven Apel. FeatureIDE: Tool Framework for Feature-Oriented Software Development. In Proceedings of the 31th International Conference on Software Engineering (ICSE), pages 611–614. IEEE, May 2009. Formal demonstration paper, acceptance rate: 33% (24 / 72).
Christian Kästner, Sven Apel, and Martin Kuhlemann. LJ^AR: A Model of Refactoring Physically and Virtually Separated Features. Technical Report 08/2009, School of Computer Science, University of Magdeburg, May 2009.
Christian Kästner, Sven Apel, and Gunter Saake. Sichere Produktlinien: Herausforderungen für Syntax- und Typ-Prüfungen. In Programmiersprachen und Rechenkonzepte – 26. Workshop der GI-Fachgruppe "Programmiersprachen und Rechenkonzepte" Bad Honnef, 4.–6. Mai 2009, pages 37–38. Institut für Informatik, Christian-Albrechts-Universität zu Kiel, May 2009.
Sven Apel, Christian Kästner, and Christian Lengauer. Vergleich und Integration von Komposition und Annotation zur Implementierung von Produktlinien. In Proceedings of Software Engineering – Fachtagung des GI-Fachbereichs Softwaretechnik, volume P-143 of LNI, pages 101–112. GI, March 2009.
Norbert Siegmund, Christian Kästner, Marko Rosenmüller, Florian Heidenreich, Sven Apel, and Gunter Saake. Bridging the Gap between Variability in Client Application and Database Schema. In Proceedings of Datenbanksysteme in Business, Technologie und Web (BTW), volume 144 of LNI, pages 297–306. GI, March 2009.
Marko Rosenmüller, Christian Kästner, Norbert Siegmund, Sagar Sunkle, Sven Apel, Thomas Leich, and Gunter Saake. SQL á la Carte – Toward Tailor-made Data Management. In Proceedings of Datenbanksysteme in Business, Technologie und Web (BTW), volume 144 of LNI, pages 117–136. GI, March 2009.

2008

Martin Kuhlemann, Don Batory, and Sven Apel. Refactoring Feature Modules. Technical Report FIN-15-2008, School of Computer Science, University of Magdeburg, December 2008.
Sven Apel, Christian Kästner, Armin Größlinger, and Christian Lengauer. On Feature Orientation and Functional Programming. Technical Report MIP-0806, Department of Informatics and Mathematics, University of Passau, November 2008.
Sven Apel, Christian Kästner, and Don Batory. Program Refactoring using Functional Aspects. In Proceedings of the International Conference on Generative Programming and Component Engineering (GPCE), pages 161–170. ACM, October 2008. Acceptance rate: 29% (16 / 55).
Marko Rosenmüller, Norbert Siegmund, Gunter Saake, and Sven Apel. Code Generation to Support Static and Dynamic Composition of Software Product Lines. In Proceedings of the International Conference on Generative Programming and Component Engineering (GPCE), pages 3–12. ACM, October 2008. Acceptance rate: 29% (16 / 55).
Sven Apel, Christian Kästner, and Christian Lengauer. Feature Featherweight Java: A Calculus for Feature-Oriented Programming and Stepwise Refinement. In Proceedings of the International Conference on Generative Programming and Component Engineering (GPCE), pages 101–112. ACM, October 2008. Acceptance rate: 29% (16 / 55).
Christian Kästner and Sven Apel. Integrating Compositional and Annotative Approaches for Product Line Engineering. In Workshop on Modularization, Composition, and Generative Techniques for Product Line Engineering, Proceedings, Nashville, TN, October 23, 2008, number MIP-0804, pages 35–40. Department of Informatics and Mathematics, University of Passau, October 2008.
Sagar Sunkle, Marko Rosenmüller, Norbert Siegmund, Syed Saif ur Rahman, Gunter Saake, and Sven Apel. Features as First-class Entities – Toward a Better Representation of Features. In Proceedings of the Workshop on Modularization, Composition, and Generative Techniques for Product Line Engineering, number MIP-0804, pages 27–34. Department of Informatics and Mathematics, University of Passau, October 2008.
Christian Kästner and Sven Apel. Type-checking Software Product Lines – A Formal Approach. In Proceedings of the International Conference on Automated Software Engineering (ASE), pages 258–267. IEEE, September 2008. Acceptance rate: 12% (30 / 280).
Christian Kästner, Sven Apel, and Salvador Trujillo. Visualizing Software Product Line Variabilities in Source Code. In Proceedings of the SPLC Workshop on Visualization in Software Product Line Engineering (ViSPLE), pages 303–313. Lero, International Science Centre, University of Limerick, September 2008.
Sven Apel. Die Rolle von Features und Aspekten in der Softwareentwicklung. In Ausgezeichnete Informatikdissertationen 2007, volume D-8 of LNI, pages 13–19. GI, September 2008.
Sven Apel, Don Batory, Goetz Graefe, Gunter Saake, and Olaf Spinczyk. 08281 Abstracts Collection – Software Engineering for Trailor-made Data Management. In Sven Apel, Don Batory, Goetz Graefe, Gunter Saake, and Olaf Spynczyk, editors, Software Engineering for Tailor-made Data Management, number 08281 in Dagstuhl Seminar Proceedings. Dagstuhl, Germany, September 2008.
Sven Apel, Don Batory, Goetz Graefe, Gunter Saake, and Olaf Spinczyk. 08281 Executive Summary – Software Engineering for Tailor-made Data Management. In Sven Apel, Don Batory, Goetz Graefe, Gunter Saake, and Olaf Spynczyk, editors, Software Engineering for Tailor-made Data Management, number 08281 in Dagstuhl Seminar Proceedings. Dagstuhl, Germany, September 2008.
Sven Apel, Christian Lengauer, Bernhard Möller, and Christian Kästner. An Algebra for Features and Feature Composition. In Proceedings of the International Conference on Algebraic Methodology and Software Technology (AMAST), volume 5140 of LNCS, pages 36–50. Springer, July 2008. Acceptance rate: 40% (23 / 58).
Martin Kuhlemann, Sven Apel, Marko Rosenmüller, and Roberto Lopez-Herrejon. A Multiparadigm Study of Crosscutting Modularity in Design Patterns. In Proceedings of the TOOLS EUROPE Conference, LNBIP, pages 121–140. Springer, June 2008. Acceptance rate: 36% (21 / 58).
Sven Apel, Christian Kästner, and Christian Lengauer. Research Challenges in the Tension Between Features and Services. In Proceedings of the ICSE Workshop on Systems Development in SOA Environments (SDSOA), pages 53–58. ACM, May 2008.
Christian Kästner, Sven Apel, and Martin Kuhlemann. Granularity in Software Product Lines. In Proceedings of the International Conference on Software Engineering (ICSE), pages 311–320. ACM, May 2008. Acceptance rate: 15% (56 / 371); SPLC Most Influential Paper Award 2018.
Sven Apel and Don Batory. How AspectJ is Used: An Analysis of Eleven AspectJ Programs. Technical Report MIP-0801, Department of Informatics and Mathematics, University of Passau, April 2008.
Sven Apel, Thomas Leich, and Gunter Saake. Aspectual Feature Modules. IEEE Transactions on Software Engineering (TSE), 34(2):162–180, April 2008.
Sven Apel. Die Rolle von Features und Aspekten in der Softwareentwicklung. it – Information Technology, 50(2):128–130, April 2008. http://it-Information-Technology.de.
Sven Apel, Christian Kästner, and Christian Lengauer. An Overview of Feature Featherweight Java. Technical Report MIP-0802, Department of Informatics and Mathematics, University of Passau, April 2008.
Sven Apel and Christian Lengauer. Superimposition: A Language-Independent Approach to Software Composition. In Cesare Pautasso and Eric Tanter, editors, Proceedings of the International Symposium on Software Composition (SC), volume 4954 of LNCS, pages 20–35. Springer, March 2008. Acceptance rate: 14% (13 / 90).
Marko Rosenmüller, Norbert Siegmund, Horst Schirmeier, Julio Sincero, Sven Apel, Thomas Leich, Olaf Spinczyk, and Gunter Saake. FAME-DBMS: Tailor-made Data Management Solutions for Embedded Systems. In Proceedings of EDBT Workshop on Software Engineering for Tailor-made Data Management (SETMDM), pages 1–6. ACM, March 2008.
Christian Kästner, Sven Apel, Salvador Trujillo, Martin Kuhlemann, and Don Batory. Language-Independent Safe Decomposition of Legacy Applications into Features. Technical Report 02/2008, School of Computer Science, University of Magdeburg, March 2008.

2007

Sven Apel, Christian Kästner, Martin Kuhlemann, and Thomas Leich. Pointcuts, Advice, Refinements, and Collaborations: Similarities, Differences, and Synergies. Innovations in Systems and Software Engineering – A NASA Journal, 3(4):281–289, December 2007.
Sven Apel. The Role of Features and Aspects in Software Development: Similarities, Differences, and Synergetic Potential. VDM Verlag Dr. Müller, December 2007.
Sven Apel and Christian Lengauer. Superimposition: A Language-Independent Approach to Software Composition. Technical Report MIP-0711, Department of Informatics and Mathematics, University of Passau, November 2007.
Sven Apel and DeLesley Hutchins. An Overview of the gDeep Calculus. Technical Report MIP-0712, Department of Informatics and Mathematics, University of Passau, November 2007.
Christian Kästner, Sven Apel, and Don Batory. A Case Study Implementing Features using AspectJ. In Proceedings of the International Software Product Line Conference (SPLC), pages 222–232. IEEE, September 2007. Acceptance rate: 35% (28 / 80).
Salvador Trujillo, Christian Kästner, and Sven Apel. Product Lines that supply other Product Lines: A Service-Oriented Approach. In Proceedings of the SPLC Workshop on Service-Oriented Architectures and Product Lines (SOAPL), number CMU/SEI-2008-SR-006, pages 69–74. Software Engineering Institute, Carnegie Mellon University, September 2007.
Sven Apel, Christian Lengauer, Don Batory, Bernhard Möller, and Christian Kästner. An Algebra for Feature-Oriented Software Development. Technical Report MIP-0706, Department of Informatics and Mathematics, University of Passau, July 2007.
Sven Apel, Christian Kästner, Thomas Leich, and Gunter Saake. Aspect Refinement - Unifying AOP and Stepwise Refinement. Journal of Object Technology (JOT) – Special Issue: TOOLS EUROPE 2007, 6(9):13–33, June 2007. Acceptance rate: 31% (24 / 78).
Sven Apel, Christian Kästner, and Salvador Trujillo. On the Necessity of Empirical Studies in the Assessment of Modularization Mechanisms for Crosscutting Concerns. In Proceedings of the International Conference on Software Engineering Workshops (ICSEW), page 161. IEEE, May 2007.
Marko Rosenmüller, Thomas Leich, and Sven Apel. Konfigurierbarkeit für ressourceneffiziente Datenhaltung in eingebetteten Systemen am Beispiel von Berkeley DB. In Datenbanksysteme in Business, Technologie und Web (BTW 2007) Workshops Proceedings, pages 329–341. Verlag Mainz, March 2007.
Martin Kuhlemann, Thomas Leich, and Sven Apel. Merkmalorientierte Architekturen für eingebettete Datenmanagementsysteme. In Datenbanksysteme in Business, Technologie und Web (BTW 2007) Workshops Proceedings, pages 342–354. Verlag Mainz, March 2007.
Martin Kuhlemann, Marko Rosenmüller, Sven Apel, and Thomas Leich. On the Duality of Aspect-Oriented and Feature-Oriented Design Patterns. In Proceedings of the Workshop on Aspects, Components, and Patterns for Infrastructure Software (ACP4IS'07), page 5. ACM, March 2007.
Martin Kuhlemann, Sven Apel, and Thomas Leich. Streamlining Feature-Oriented Designs. In Proceedings of the International Symposium on Software Composition (SC), pages 177–184. University of Minho, March 2007.
Roberto Lopez-Herrejon and Sven Apel. Measuring and Characterizing Crosscutting in Aspect-Based Programs: Basic Metrics and Case Studies. In Proceedings of the International Conference on Fundamental Approaches to Software Engineering (FASE), volume 4422 of LNCS, pages 423–437. Springer, March 2007. Acceptance rate: 21% (30 / 141).
Sven Apel. The Role of Features and Aspects in Software Development. doctoral thesis, School of Computer Science, University of Magdeburg, March 2007. Software-Engineering Award of the Ernst-Denert Foundation.
Martin Kuhlemann, Sven Apel, and Thomas Leich. Streamlining Feature-Oriented Designs. In Proceedings of the International Symposium on Software Composition (SC), volume 4829 of LNCS, pages 168–175. Springer, March 2007. Acceptance rate: 34% (20 / 59).
Marko Rosenmüller, Thomas Leich, Sven Apel, and Gunter Saake. Von Mini- über Micro- bis zu Nano-DBMS: Datenhaltung in eingebetteten Systemen. Datenbank Spektrum, 7(20):33–43, February 2007.

2006

Sven Apel, Christian Kästner, Martin Kuhlemann, and Thomas Leich. Modularität von Softwarebausteinen: Aspekte versus Merkmale. iX Magazin für Professionelle Informationstechnik, Number 10, pages 116–122, October 2006.
Sven Apel and Don Batory. When to Use Features and Aspects? A Case Study. In Proceedings of the International Conference on Generative Programming and Component Engineering (GPCE), pages 59–68. ACM, October 2006. Acceptance rate: 28% (25 / 88).
Sven Apel, Don Batory, and Marko Rosenmüller. On the Structure of Crosscutting Concerns: Using Aspects or Collaborations?. In GPCE Workshop on Aspect-Oriented Product Line Engineering (AOPLE), October 2006. Published at the Workshop Web site: http://www.softeng.ox.ac.uk/aople/.
Christian Kästner, Sven Apel, and Gunter Saake. Implementing Bounded Aspect Quantification in AspectJ. In Proceedings of the ECOOP Workshop on Reflection, AOP and Meta-Data for Software Evolution (RAM-SE), pages 111–122. School of Computer Science, University of Magdeburg, July 2006.
Sven Apel and Jia Liu. On the Notion of Functional Aspects in Aspect-Oriented Refactoring. In Proceedings of the ECOOP Workshop on Aspects, Dependencies, and Interactions (ADI), pages 1–9. Computing Department, Lancaster University, July 2006.
Sven Apel, Martin Kuhlemann, and Thomas Leich. Generic Feature Modules: Two-Staged Program Customization. In Proceedings of the International Conference on Software and Data Technologies (ICSOFT), pages 127–132. INSTICC Press, July 2006.
Sven Apel, Thomas Leich, and Gunter Saake. Aspectual Mixin Layers: Aspects and Features in Concert. In Proceedings of the International Conference on Software Engineering (ICSE), pages 122–131. ACM, May 2006. Acceptance rate: 9% (36 / 395).
Sven Apel, Christian Kästner, Thomas Leich, and Gunter Saake. Aspect Refinement. Technical Report 10/2006, School of Computer Science, University of Magdeburg, March 2006.
Sven Apel and Don Batory. An Empirical Study on Features and Aspects. Technical Report 06/2006, School of Computer Science, University of Magdeburg, March 2006.

2005

Sven Apel, Thomas Leich, and Gunter Saake. Mixin-Based Aspect Inheritance. Technical Report 10/2005, School of Computer Science, University of Magdeburg, December 2005.
Sven Apel, Thomas Leich, and Gunter Saake. Aspect Refinement and Bounded Quantification in Incremental Designs. In Proceedings of the Asia-Pacific Software Engineering Conference (APSEC), pages 796–804. IEEE, December 2005.
Thomas Leich, Sven Apel, Marko Rosenmüller, and Gunter Saake. Handling Optional Features in Software Product Lines. In OOPSLA Workshop on Managing Variabilities consistently in Design and Code, October 2005. Published at the Workshop Web site: http://www.kircher-schwanninger.de/workshops/MVCDC/.
Thomas Leich, Sven Apel, Laura Marnitz, and Gunter Saake. Tool Support for Feature-Oriented Software Development – FeatureIDE: An Eclipse-Based Approach. In Proceedings of the OOPSLA Workshop on Eclipse Technology eXchange (ETX), pages 55–59. ACM, October 2005.
Sven Apel and Erik Buchmann. Biology-Inspired Optimizations of Peer-to-Peer Overlay Networks. Practices in Information Processing and Communications (Praxis der Informationsverarbeitung und Kommunikation), 28(4):199–205, October 2005.
Sven Apel, Thomas Leich, and Gunter Saake. Aspectual Mixin Layers. Technical Report 08/2005, School of Computer Science, University of Magdeburg, September 2005.
Thomas Leich, Sven Apel, and Gunter Saake. Using Step-Wise Refinement to Build a Flexible Lightweight Storage Manager. In Proceedings of the East-European Conference on Advances in Databases and Information Systems (ADBIS), volume 3631 of LNCS, pages 324–337. Springer, September 2005.
Sven Apel, Marko Rosenmüller, Thomas Leich, and Gunter Saake. FeatureC++: On the Symbiosis of Feature-Oriented and Aspect-Oriented Programming. In Proceedings of the International Conference on Generative Programming and Component Engineering (GPCE), volume 3676 of LNCS, pages 125–140. Springer, September 2005. Acceptance rate: 29% (25 / 87).
Sven Apel, Thomas Leich, and Gunter Saake. Aspect Refinement in Software Product Lines. In Aspects and Software Product Lines (ASPL'05): An Early Aspects Workshop at SPLC-Europe'05, September 2005. Published at the Workshop Web site: http://www.early-aspects.net/events/splc2005ws/.
Sven Apel, Thomas Leich, Marko Rosenmüller, and Gunter Saake. Combining Feature-Oriented and Aspect-Oriented Programming to Support Software Evolution. In Proceedings of the 2nd ECOOP Workshop on Reflection, AOP and Meta-Data for Software Evolution (RAM-SE), pages 3–16. School of Computer Science, University of Magdeburg, July 2005.
Sven Apel and Klemens Böhm. Self-Organization in Overlay Networks. In Proceedings of CAISE'05 Workshops (Workshop on Adaptive and Self-Managing Enterprise Applications), volume 2, pages 139–153. FEUP Edicoes, June 2005.
Ahmed Gohneim, Sven Apel, and Gunter Saake. Evolutionary Software Life Cycle for Self-Adapting Software Systems. In Proceedings of the International Conference on Enterprise Information Systems (ICEIS), pages 211–216. INSTICC Press, May 2005.
Sven Apel, Gunter Saake, Sebastian Herden, and Andre Zwanziger. A Mediator for E-Business. In Proceedings of the International Conference on Web Information Systems and Technologies (WEBIST), pages 427–430. INSTICC Press, May 2005.
Erik Buchmann, Sven Apel, and Gunter Saake. Piggyback Meta-Data Propagation in Distributed Hash Tables. In Proceedings of the International Conference on Web Information Systems and Technologies (WEBIST), pages 72–79. INSTICC Press, May 2005.
Sven Apel, Thomas Leich, Marko Rosenmüller, and Gunter Saake. FeatureC++: Feature-Oriented and Aspect-Oriented Programming in C++. Technical Report 03/2005, School of Computer Science, University of Magdeburg, April 2005.

2004

Sven Apel, Helge Sichting, and Klemens Böhm. Configurable Binding: How to Exploit Mixins and Design Patterns for Resource-Constrained Environments. Technical Report 14/2004, School of Computer Science, University of Magdeburg, December 2004.
Sven Apel and Klemens Böhm. Using Mixins to Build a Flexible Lightweight Middleware for Ubiquitous Computing. In Proceedings of the IEEE ASE Workshop on Software Engineering and Middleware (SEM'04), pages 99–114. Austrian Computer Society, September 2004. Best Student Paper Award.
Sven Apel and Klemens Böhm. Towards the Development of Ubiquitous Middleware Product Lines. In Software Engineering and Middleware, volume 3437 of LNCS, pages 137–153. Springer, September 2004.

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