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Matthias Gerstgrasser

7 accepted papers

2025

Collapse or Thrive: Perils and Promises of Synthetic Data in a Self-Generating World

ICML 2025poster

What happens when generative machine learning models are pretrained on web-scale datasets containing data generated by earlier models? Some prior work warns of “model collapse” as the web is overwhelmed by synthetic data; other work suggests the problem can be contained (i.e. collapse can be avoided…

Cited by 8SourcePDFScholar
2025

Position: Machine Learning Conferences Should Establish a "Refutations and Critiques" Track

NeurIPS 2025oral

Science progresses by iteratively advancing and correcting humanity's understanding of the world. In machine learning (ML) research, rapid advancements have led to an explosion of publications, but have also led to misleading, incorrect, flawed or perhaps even fraudulent studies being accepted and s…

Cited by 0SourceScholar
2024

Grounding Gaps in Language Model Generations

NAACL 2024long

Effective conversation requires common ground: a shared understanding between the participants. Common ground, however, does not emerge spontaneously in conversation. Speakers and listeners work together to both identify and construct a shared basis while avoiding misunderstanding. To accomplish gro…

2023

Oracles & Followers: Stackelberg Equilibria in Deep Multi-Agent Reinforcement Learning

ICML 2023poster

Stackelberg equilibria arise naturally in a range of popular learning problems, such as in security games or indirect mechanism design, and have received increasing attention in the reinforcement learning literature. We present a general framework for implementing Stackelberg equilibria search as a…

Cited by 25SourcePDFScholar
2023

Selectively Sharing Experiences Improves Multi-Agent Reinforcement Learning

NeurIPS 2023poster

We present a novel multi-agent RL approach, Selective Multi-Agent Prioritized Experience Relay, in which agents share with other agents a limited number of transitions they observe during training. The intuition behind this is that even a small number of relevant experiences from other agents could…

2022

CrowdPlay: Crowdsourcing Human Demonstrations for Offline Learning

ICLR 2022poster

Crowdsourcing has been instrumental for driving AI advances that rely on large-scale data. At the same time, reinforcement learning has seen rapid progress through benchmark environments that strike a balance between tractability and real-world complexity, such as ALE and OpenAI Gym. In this paper,…

2021

Reinforcement Learning of Sequential Price Mechanisms

AAAI 2021technical

We introduce the use of reinforcement learning for indirect mechanisms, working with the existing class of sequential price mechanisms, which generalizes both serial dictatorship and posted price mechanisms and essentially characterizes all strongly obviously strategyproof mechanisms. Learning an op…