collaborators

5 papers

cs.SE2026

Metamorphic Testing with the Rashomon Set: Explanation Faithfulness in Machine Learning

Helge Spieker, Jørn Eirik Betten, Arnaud Gotlieb

Multiple machine learning models can achieve near-equivalent predictive performance on the same task, yet provide divergent feature-based explanations. This is called the Rashomon…

cs.AI2025

Translating the Rashomon Effect to Sequential Decision-Making Tasks

Dennis Gross, Jørn Eirik Betten, Helge Spieker

The Rashomon effect describes the phenomenon where multiple models trained on the same data produce identical predictions while differing in which features they rely on internally.…

cs.SE2025

Prompting for Performance: Exploring LLMs for Configuring Software

Helge Spieker, Théo Matricon, Nassim Belmecheri +7

Software systems usually provide numerous configuration options that can affect performance metrics such as execution time, memory usage, binary size, or bitrate. On the one hand,…

cs.LG2025

Rashomon in the Streets: Explanation Ambiguity in Scene Understanding

Helge Spieker, Jørn Eirik Betten, Arnaud Gotlieb +2

Explainable AI (XAI) is essential for validating and trusting models in safety-critical applications like autonomous driving. However, the reliability of XAI is challenged by the R…

cs.SE2025

Reusable Test Suites for Reinforcement Learning

Jørn Eirik Betten, Quentin Mazouni, Dennis Gross +2

Reinforcement learning (RL) agents show great promise in solving sequential decision-making tasks. However, validating the reliability and performance of the agent policies' behavi…