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Lars Grunske

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#artificial intelligence Preprint Oct 2026

Backdooring Sparse Autoencoders

Sparse autoencoders (SAEs) are increasingly used not only to interpret language models but also to intervene on their internal representations. We show that this creates a supply-chain attack surface: a maliciously modified SAE can induce attacker-chosen behavior when inserted into the forward pass of an otherwise unch...

E. Ahlers, Daniel Passon, Tobias Kiecker et al. · 0 citations
Conference Open access Aug 2026

Nobody Talks About the Prompt Club: Evaluating Diverse Persona Generation Through System Prompts and Guidelines

Personas are widely used to represent users' motivations, goals, and needs, yet the perspectives of underrepresented groups are rarely addressed in human-centered design. Large Language Models (LLMs) promise to generate personas from vast datasets, but achieving genuine diversity and accurate representation requires de...

C. Lazik, Charlotte Kauter, Isabella Graßl et al. · 0 citations
Jul 2026

Is Three the Magic Number? An Empirical Evaluation of LLM-Based Repair Loops

It is suggested that repair budgets should be treated as an explicit experimental variable, as they directly affect evaluation outcomes, computational cost, runtime, and reproducibility in LLM-based software engineering research.

Tobias Kiecker, Eik Reichmann, Hosung Kang et al. · 0 citations

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