Dr. Stefan Fischer
Research Team Lead Automated Software Testing and Quality Assurance
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Stefan Fischer is a Senior Researcher for Software Science with several years of experience as researcher.
Research Interests
- Developing automated methods and tools for software testing and software analytics
- Variable Software Design, Architecture, and Testing
- Software Engineering and Artificial Intelligence
- Empirical & value-based software engineering research
Key Facts
- PhD studies in the field of testing variable software at the Johannes Kepler University Linz
- Author of more than 20 peer-reviewed publications
- Reviewer for top conferences and journals (e.g., Empirical Software Engineering, Journal of Systems and Software)
Publikationen
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2026
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Dataset for: TrainTicketTrace: A Multi-Fault Distributed Dataset for Microservice Fault Detection and Localization
Urbanke, P., & Fischer, S.. (2025). Dataset for: TrainTicketTrace: A Multi-Fault Distributed Dataset for Microservice Fault Detection and Localization [Data set]. In None (p. None). Zenodo. https://doi.org/10.5281/ZENODO.17811972
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2025
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STRIPID: Simulation Test Ranking and Interactive Performance Inspection for PID controllers
Duque-Torres, A., Klammer, C., & Fischer, S.. (2025). STRIPID: Simulation Test Ranking and Interactive Performance Inspection for PID Controllers. In Lecture Notes in Computer Science (pp. 136–150). Springer Nature Switzerland. https://doi.org/10.1007/978-3-032-12092-2_9
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Metamorphic testing for optimisation: A case study on PID controller tuning
Duque-Torres, A., Klammer, C., Fischer, S., Ramler, R., & Pfahl, D. (2025). Metamorphic testing for optimisation: A case study on PID controller tuning. Information and Software Technology, 188, 107872.
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Assessing the strength of Metamorphic Testing applied to optimisation software—Experience from industry
Duque-Torres, A., Klammer, C., Fischer, S., Pfahl, D., & Ramler, R. (2025). Assessing the strength of Metamorphic Testing applied to optimisation software—Experience from industry. Information and Software Technology, 186, 107807.
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Automating Invariant Filtering: Leveraging LLMs to Streamline Test Oracle Generation
Fischer, S., & Klammer, C. (2025). Automating Invariant Filtering: Leveraging LLMs to Streamline Test Oracle Generation. Balancing Software Innovation and Regulatory Compliance, 51–71.
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2024
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Breaking Boundaries in Industrial Programming: Towards a Novel Architecture for Machine Controls
Wetzlmaier, T., Fischer, S., Wöß, A., Löberbauer, M., Koll, G., & Fischer, F. (2024). Breaking Boundaries in Industrial Programming: Towards a Novel Architecture for Machine Controls. 2024 IEEE 29th International Conference on Emerging Technologies and Factory Automation (ETFA), 1–4.
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First Experiments on Automated Execution of Gherkin Test Specifications with Collaborating LLM Agents
Bergsmann, S., Schmidt, A., Fischer, S., & Ramler, R. (2024). First Experiments on Automated Execution of Gherkin Test Specifications with Collaborating LLM Agents. Proceedings of the 15th ACM International Workshop on Automating Test Case Design, Selection and Evaluation, 12–15.
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The Metamorphic Lighthouse: Understanding the Input Data Space of Metamorphic Relations
Duque-Torres, A., Pfahl, D., Klammer, C., Fischer, S., & Ramler, R. (2024). The Metamorphic Lighthouse: Understanding the Input Data Space of Metamorphic Relations. 2024 50th Euromicro Conference on Software Engineering and Advanced Applications (SEAA), 379–386.
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An Overview of Microservice-Based Systems Used for Evaluation in Testing and Monitoring: A Systematic Mapping Study
Fischer, S., Urbanke, P., Ramler, R., Steidl, M., & Felderer, M. (2024). An Overview of Microservice-Based Systems Used for Evaluation in Testing and Monitoring: A Systematic Mapping Study. Proceedings of the 5th ACM/IEEE International Conference on Automation of Software Test (AST 2024).
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Introducing a Linter in an Industrial Lua Code Base
Walchshofer, A., Fischer, S., Wöß, A., Duque-Torres, A., Löberbauer, M., & Koll, G. (2024, March). Introducing a Linter in an Industrial Lua Code Base. In 2024 IEEE International Conference on Software Analysis, Evolution and Reengineering-Companion (SANER-C) (pp. 191-198). IEEE.
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MetaExploreX: A Visualisation Tool for Selecting and Constraining Metamorphic Relations
Duque-Torres, A., Pfahl, D., Klammer, C., & Fischer, S. (2024). MetaExploreX: A Visualisation Tool for Selecting and Constraining Metamorphic Relations. 2024 IEEE International Conference on Software Analysis, Evolution and Reengineering - Companion (SANER-C), 219–222.
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2023
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Is It the Best Solution? Testing an Optimisation Algorithm with Metamorphic Testing
Duque-Torres, A., Klammer, C., Fischer, S., & Pfahl, D. (2023). Is It the Best Solution? Testing an Optimisation Algorithm with Metamorphic Testing. Lecture Notes in Computer Science, 339–354.
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Exploring a Test Data-Driven Method for Selecting and Constraining Metamorphic Relations
Duque-Torres, A., Pfahl, D., Klammer, C., & Fischer, S. (2023). Exploring a Test Data-Driven Method for Selecting and Constraining Metamorphic Relations. 2023 49th Euromicro Conference on Software Engineering and Advanced Applications (SEAA).
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Towards Automatic Generation of Amplified Regression Test Oracles
Duque-Torres, A., Klammer, C., Pfahl, D., Fischer, S., & Ramler, R. (2023). Towards Automatic Generation of Amplified Regression Test Oracles. 2023 49th Euromicro Conference on Software Engineering and Advanced Applications (SEAA).
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Model-based Testing for a Family of Mobile Applications: Industrial Experiences
Fischer, S., Ramler, R., Assunção, W. K. G., Egyed, A., Gradl, C., & Auberger, S. (2023). Model-based Testing for a Family of Mobile Applications. Proceedings of the 27th ACM International Systems and Software Product Line Conference - Volume A.
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Bug or not Bug? Analysing the Reasons Behind Metamorphic Relation Violations
Duque-Torres, A., Pfahl, D., Klammer, C., & Fischer, S. (2023). Bug or not Bug? Analysing the Reasons Behind Metamorphic Relation Violations. 2023 IEEE International Conference on Software Analysis, Evolution and Reengineering (SANER).
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Insights from Building a GUI Testing Tool
Fischer, S. (2023). Insights from Building a GUI Testing Tool. 2023 IEEE International Conference on Software Analysis, Evolution and Reengineering (SANER).
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Testing of Highly Configurable Cyber-Physical Systems - Results from a Two-Phase Multiple Case Study
Fischer, S., Klammer, C., Fernández, A. M. G., Rabiser, R., & Ramler, R. (2023). Testing of highly configurable cyber–physical systems — Results from a two-phase multiple case study. Journal of Systems and Software, 199, 111624.
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Designing a Test Model for a Configurable System: An Exploratory Study of Preprocessor Directives and Feature Toggles
Fischer, S., Michelon, G. K., Assunção, W. K. G., Ramler, R., & Egyed, A. (2023). Designing a Test Model for a Configurable System: An Exploratory Study of Preprocessor Directives and Feature Toggles. Proceedings of the 17th International Working Conference on Variability Modelling of Software-Intensive Systems.
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2022
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A Toolchain for Testing OPC UA Interfaces
Walchshofer, A., Klammer, C., & Fischer, S. (2022). A toolchain for testing OPC UA interfaces. 2022 IEEE 27th International Conference on Emerging Technologies and Factory Automation (ETFA).
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Evolving software system families in space and time with feature revisions
Michelon, G. K., Obermann, D., Assunção, W. K. G., Linsbauer, L., Grünbacher, P., Fischer, S., Lopez-Herrejon, R. E., & Egyed, A. (2022). Evolving software system families in space and time with feature revisions. Empirical Software Engineering, 27(5).
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iTest: Using coverage measurements to improve test efficiency
Fischer, S., Rigoni, D., & Obrenovic, N. (2022). iTest: Using coverage measurements to improve test efficiency. 2022 IEEE International Conference on Software Analysis, Evolution and Reengineering (SANER).
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Using Source Code Metrics for Predicting Metamorphic Relations at Method Level
Duque-Torres, A., Pfahl, D., Klammer, C., & Fischer, S. (2022). Using Source Code Metrics for Predicting Metamorphic Relations at Method Level. 2022 IEEE International Conference on Software Analysis, Evolution and Reengineering (SANER).
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Comparing Automated Reuse of Scripted Tests and Model-Based Tests for Configurable Software
Fischer, S., Ramler, R., & Linsbauer, L. (2021). Comparing Automated Reuse of Scripted Tests and Model-Based Tests for Configurable Software. 2021 28th Asia-Pacific Software Engineering Conference (APSEC).
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2021
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Integrating Usage Monitoring for Continuous Evaluation and Testing in the UI of an Industry Application
Fischer, S., Klammer, C., & Ramler, R. (2021). Integrating usage monitoring for continuous evaluation and testing in the UI of an industry application. Proceedings of the 12th International Workshop on Automating TEST Case Design, Selection, and Evaluation.
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A Case Study on the Evolution of Configuration Options of a Highly-Configurable Software System
Fischer, S. (2021). A Case Study on the Evolution of Configuration Options of a Highly-Configurable Software System. 2021 IEEE International Conference on Software Analysis, Evolution and Reengineering (SANER).
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A Hybrid Feature Location Technique for Re-Engineering Single Systems into Software Product Lines
Michelon, G. K., Linsbauer, L., Assunção, W. K. G., Fischer, S., & Egyed, A. (2021). A Hybrid Feature Location Technique for Re-engineeringSingle Systems into Software Product Lines. Proceedings of the 15th International Working Conference on Variability Modelling of Software-Intensive Systems.
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Automated Reuse of Test Cases for Highly Configurable Software Systems
Fischer, S., Michelon, G. K., Ramler, R. R., Linsbauer, L. & Egyed, A., (2021). Automated Reuse of Test Cases for Highly Configurable Software Systems. In: Koziolek, A., Schaefer, I. & Seidl, C. (Hrsg.), Software Engineering 2021. Bonn: Gesellschaft für Informatik e.V.. (S. 39-40).
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Testing of Highly Configurable Cyber-Physical Systems – A Multiple Case Study
Fischer, S., Ramler, R., Klammer, C., & Rabiser, R. (2021). Testing of Highly Configurable Cyber-Physical Systems – A Multiple Case Study. Proceedings of the 15th International Working Conference on Variability Modelling of Software-Intensive Systems.
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2020
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An early investigation of unit testing practices of component-based software systems
Buchgeher, G., Fischer, S., Moser, M., & Pichler, J. (2020). An Early Investigation of Unit Testing Practices of Component-Based Software Systems. 2020 IEEE Workshop on Validation, Analysis and Evolution of Software Tests (VST).
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An empirical evaluation for object initialization of member variables in unit testing
Fischer, S., Haslinger, E. N., Zimmermann, M., & Thaller, H. (2020). An Empirical Evaluation for Object Initialization of Member Variables in Unit Testing. 2020 IEEE Workshop on Validation, Analysis and Evolution of Software Tests (VST).
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Towards fault localization via probabilistic software modeling
Thaller, H., Linsbauer, L., Egyed, A., & Fischer, S. (2020). Towards Fault Localization via Probabilistic Software Modeling. 2020 IEEE Workshop on Validation, Analysis and Evolution of Software Tests (VST).
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Automated test reuse for highly configurable software
Fischer, S., Michelon, G. K., Ramler, R., Linsbauer, L., & Egyed, A. (2020). Automated test reuse for highly configurable software. Empirical Software Engineering, 25(6), 5295–5332.
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2019
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Automating test reuse for highly configurable software
Fischer, S., Ramler, R., Linsbauer, L., & Egyed, A. (2019). Automating Test Reuse for Highly Configurable Software. Proceedings of the 23rd International Systems and Software Product Line Conference - Volume A.
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