ReasonIR: Training Retrievers for Reasoning Tasks

Fuente: arXiv
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Main Authors: Shao, Rulin, Qiao, Rui, Kishore, Varsha, Muennighoff, Niklas, Lin, Xi Victoria, Rus, Daniela, Low, Bryan Kian Hsiang, Min, Sewon, Yih, Wen-tau, Koh, Pang Wei, Zettlemoyer, Luke
Format: Preprint
Published: 2025
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author Shao, Rulin
Qiao, Rui
Kishore, Varsha
Muennighoff, Niklas
Lin, Xi Victoria
Rus, Daniela
Low, Bryan Kian Hsiang
Min, Sewon
Yih, Wen-tau
Koh, Pang Wei
Zettlemoyer, Luke
author_facet Shao, Rulin
Qiao, Rui
Kishore, Varsha
Muennighoff, Niklas
Lin, Xi Victoria
Rus, Daniela
Low, Bryan Kian Hsiang
Min, Sewon
Yih, Wen-tau
Koh, Pang Wei
Zettlemoyer, Luke
contents We present ReasonIR-8B, the first retriever specifically trained for general reasoning tasks. Existing retrievers have shown limited gains on reasoning tasks, in part because existing training datasets focus on short factual queries tied to documents that straightforwardly answer them. We develop a synthetic data generation pipeline that, for each document, our pipeline creates a challenging and relevant query, along with a plausibly related but ultimately unhelpful hard negative. By training on a mixture of our synthetic data and existing public data, ReasonIR-8B achieves a new state-of-the-art of 29.9 nDCG@10 without reranker and 36.9 nDCG@10 with reranker on BRIGHT, a widely-used reasoning-intensive information retrieval (IR) benchmark. When applied to RAG tasks, ReasonIR-8B improves MMLU and GPQA performance by 6.4% and 22.6% respectively, relative to the closed-book baseline, outperforming other retrievers and search engines. In addition, ReasonIR-8B uses test-time compute more effectively: on BRIGHT, its performance consistently increases with longer and more information-rich rewritten queries; it continues to outperform other retrievers when combined with an LLM reranker. Our training recipe is general and can be easily extended to future LLMs; to this end, we open-source our code, data, and model.
format Preprint
id arxiv_https___arxiv_org_abs_2504_20595
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle ReasonIR: Training Retrievers for Reasoning Tasks
Shao, Rulin
Qiao, Rui
Kishore, Varsha
Muennighoff, Niklas
Lin, Xi Victoria
Rus, Daniela
Low, Bryan Kian Hsiang
Min, Sewon
Yih, Wen-tau
Koh, Pang Wei
Zettlemoyer, Luke
Artificial Intelligence
Computation and Language
Information Retrieval
Machine Learning
We present ReasonIR-8B, the first retriever specifically trained for general reasoning tasks. Existing retrievers have shown limited gains on reasoning tasks, in part because existing training datasets focus on short factual queries tied to documents that straightforwardly answer them. We develop a synthetic data generation pipeline that, for each document, our pipeline creates a challenging and relevant query, along with a plausibly related but ultimately unhelpful hard negative. By training on a mixture of our synthetic data and existing public data, ReasonIR-8B achieves a new state-of-the-art of 29.9 nDCG@10 without reranker and 36.9 nDCG@10 with reranker on BRIGHT, a widely-used reasoning-intensive information retrieval (IR) benchmark. When applied to RAG tasks, ReasonIR-8B improves MMLU and GPQA performance by 6.4% and 22.6% respectively, relative to the closed-book baseline, outperforming other retrievers and search engines. In addition, ReasonIR-8B uses test-time compute more effectively: on BRIGHT, its performance consistently increases with longer and more information-rich rewritten queries; it continues to outperform other retrievers when combined with an LLM reranker. Our training recipe is general and can be easily extended to future LLMs; to this end, we open-source our code, data, and model.
title ReasonIR: Training Retrievers for Reasoning Tasks
topic Artificial Intelligence
Computation and Language
Information Retrieval
Machine Learning
url https://arxiv.org/abs/2504.20595