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LLM-as-a-Judge: Toward World Models for Slate Recommendation Systems

Published: November 6, 2025 | arXiv ID: 2511.04541v1

By: Baptiste Bonin, Maxime Heuillet, Audrey Durand

Potential Business Impact:

Helps computers guess what you want to see next.

Business Areas:
Natural Language Processing Artificial Intelligence, Data and Analytics, Software

Modeling user preferences across domains remains a key challenge in slate recommendation (i.e. recommending an ordered sequence of items) research. We investigate how Large Language Models (LLM) can effectively act as world models of user preferences through pairwise reasoning over slates. We conduct an empirical study involving several LLMs on three tasks spanning different datasets. Our results reveal relationships between task performance and properties of the preference function captured by LLMs, hinting towards areas for improvement and highlighting the potential of LLMs as world models in recommender systems.

Country of Origin
🇨🇦 Canada

Page Count
11 pages

Category
Computer Science:
Information Retrieval