Christoph Laaber
Postdoctoral Fellow
- Department
- Engineering Complex Software Systems
- Organisation
- Simula Research Laboratory
- Research Interests
- Software Testing Software Performance Performance Testing

- laaber@simula.no
- Web
- laaber.net
Publications
2025
Journal Articles
N. Oldfield
Faster and Better Quantum Software Testing through Specification Reduction and Projective Measurements
Transactions on Software Engineering and Methodology (TOSEM)
N. Japke, M. Grambow, C. Laaber and D. Bermbach
µOpTime: Statically Reducing the Execution Time of Microbenchmark Suites Using Stability Metrics
ACM Transactions on Software Engineering and Methodology
Proceedings, refereed
E. Isaku, C. Laaber, H. Sartaj, S. Ali, T. Schwitalla and J. Nygård
LLMs in the Heart of Differential Testing: A Case Study on a Medical Rule Engine
ICST 2025, 18th IEEE International Conference on Software Testing, Verification and Validation
2024
Journal Articles
C. Laaber, S. Ali, T. Schwitalla and J. F. Nygård
Testing Medical Rules Web Services in Practice
arXiv
C. Laaber, T. Yue and S. Ali
Evaluating Search-Based Software Microbenchmark Prioritization
IEEE Transactions on Software Engineering
Proceedings, non-refereed
E. Isaku, C. Laaber, H. Sartaj, S. Ali, T. Schwitalla and J. Nygård
LLMs in the Heart of Differential Testing: A Case Study on a Medical Rule Engine
ArXiv
2023
Proceedings, refereed
E. Isaku, H. Sartaj, C. Laaber, T. Yue, S. Ali, T. Schwitalla and J. Nygård
Cost Reduction on Testing Evolving Cancer Registry System
2023 IEEE International Conference on Software Maintenance and Evolution (ICSME)
C. Laaber, T. Yue, S. Ali, T. Schwitalla and J. F. Nygård
Challenges of Testing an Evolving Cancer Registration Support System in Practice
45th IEEE/ACM International Conference on Software Engineering: Companion Proceedings (ICSE-Companion 2023)
C. Laaber, T. Yue, S. Ali, T. Schwitalla and J. F. Nygård
Automated Test Generation for Medical Rules Web Services: A Case Study at the Cancer Registry of Norway
31st ACM Joint European Software Engineering Conference and Symposium on the Foundations of Software Engineering (ESEC/FSE 2023)
2022
Journal Articles
M. Grambow, D. Kovalev, C. Laaber, P. Leitner and D. Bermbach
Using Microbenchmark Suites to Detect Application Performance Changes
IEEE Transactions on Cloud Computing
Talks, contributed
C. Laaber
Predicting Unstable Software Benchmarks using Static Source Code Features
International Conference on Software Engineering (ICSE)
2021
Talks, invited
C. Laaber
Deliberate Microbenchmarking of Software Systems
Cancer Registry of Norway
C. Laaber
Variability of Microbenchmark Results and How to Deal with It
Chalmers, Software Engineering Division, University of Gothenburg, Sweden