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Joachim Baumann

6 accepted papers

2026

SimBench: Benchmarking the Ability of Large Language Models to Simulate Human Behaviors

ICLR 2026poster

Large language model (LLM) simulations of human behavior have the potential to revolutionize the social and behavioral sciences, if and only if they faithfully reflect real human behaviors. Current evaluations are fragmented, based on bespoke tasks and metrics, creating a patchwork of incomparable r…

Cited by 0SourceScholar
2024

Algorithmic Collective Action in Recommender Systems: Promoting Songs by Reordering Playlists

NeurIPS 2024poster

We investigate algorithmic collective action in transformer-based recommender systems. Our use case is a collective of fans aiming to promote the visibility of an underrepresented artist by strategically placing one of their songs in the existing playlists they control. We introduce two easily imple…

2024

Preventing Eviction-Caused Homelessness through ML-Informed Distribution of Rental Assistance

AAAI 2024technical

Rental assistance programs provide individuals with financial assistance to prevent housing instabilities caused by evictions and avert homelessness. Since these programs operate under resource constraints, they must decide who to prioritize. Typically, funding is distributed by a reactive allocatio…

Cited by 3SourcePDFScholar
2023

Bias On Demand: Investigating Bias with a Synthetic Data Generator

IJCAI 2023poster

Machine Learning (ML) systems are increasingly being adopted to make decisions that might have a significant impact on people's lives. Because these decision-making systems rely on data-driven learning, the risk is that they will systematically propagate the bias embedded in the data. To prevent har…