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arXiv · 2504.06276

Can we repurpose multiple-choice question-answering models to rerank retrieved documents?

Jasper Kyle Catapang
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Abstract

Yes, repurposing multiple-choice question-answering (MCQA) models for document reranking is both feasible and valuable. This preliminary work is founded on mathematical parallels between MCQA decision-making and cross-encoder semantic relevance assessments, leading to the development of R*, a proof-of-concept model that harmonizes these approaches. Designed to assess document relevance with depth and precision, R* showcases how MCQA's principles can improve reranking in information retrieval (IR) and retrieval-augmented generation (RAG) systems -- ultimately enhancing search and dialogue in AI-powered systems. Through experimental validation, R* proves to improve retrieval accuracy and contribute to the field's advancement by demonstrating a practical prototype of MCQA for reranking by keeping it lightweight.

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Jasper Kyle Catapang. 2025-03-06. Can we repurpose multiple-choice question-answering models to rerank retrieved documents?. https://arxiv.org/abs/2504.06276

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