Author

Carlos Peláez-González

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#artificial intelligence Preprint Oct 2026

Statistical Detection of Positional Bias in LLM-Based Recommender Systems: Methodologies and Empirical Evidence

Large Language Models (LLMs) are increasingly used as recommendation generators in conversational recommender systems (RS) via retrieval-augmented generation (RAG). This flexible design introduces new sources of structural bias. This paper studies positional bias in top-1 and single-turn LLM-based RS: systematic depend...

Carlos Peláez-González, Francisco Herrera, Andrés Herrera-Poyatos · 0 citations