EviNote-RAG: Enhancing RAG Models via Answer-Supportive Evidence Notes

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Main Authors: Dai, Yuqin, Wang, Guoqing, Wang, Yuan, Dou, Kairan, Zhou, Kaichen, Zhang, Zhanwei, Yang, Shuo, Tang, Fei, Yin, Jun, Zeng, Pengyu, Ying, Zhenzhe, Yi, Can, Meng, Changhua, Zhou, Yuchen, Shen, Yongliang, Lu, Shuai
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Published: 2025
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author Dai, Yuqin
Wang, Guoqing
Wang, Yuan
Dou, Kairan
Zhou, Kaichen
Zhang, Zhanwei
Yang, Shuo
Tang, Fei
Yin, Jun
Zeng, Pengyu
Ying, Zhenzhe
Yi, Can
Meng, Changhua
Zhou, Yuchen
Shen, Yongliang
Lu, Shuai
author_facet Dai, Yuqin
Wang, Guoqing
Wang, Yuan
Dou, Kairan
Zhou, Kaichen
Zhang, Zhanwei
Yang, Shuo
Tang, Fei
Yin, Jun
Zeng, Pengyu
Ying, Zhenzhe
Yi, Can
Meng, Changhua
Zhou, Yuchen
Shen, Yongliang
Lu, Shuai
contents Retrieval-Augmented Generation (RAG) has advanced open-domain question answering by incorporating external information into model reasoning. However, effectively leveraging external information to enhance reasoning presents the following challenges: (1) low signal-to-noise ratio, where answer-supportive external information is diluted by irrelevant material, and (2) error accumulation, which arises in multi-hop reasoning when incomplete or misleading information is incorporated. To address these challenges, we introduce EviNote-RAG, a framework that follows a retrieve-note-answer workflow. Instead of reasoning directly over raw external information, the model first produces Supportive-Evidence Notes (SENs), which concisely preserve answer-critical information and explicitly mark key and uncertainty information to improve accuracy. We further design an entailment-based Evidence Quality Reward (EQR) to ensure that SENs are logically sufficient to derive the final answer, thereby enhancing SENs' quality. Experiments on both in-domain and out-of-domain QA benchmarks show that EviNote-RAG achieves state-of-the-art performance, improving answer accuracy, training stability, robustness, and efficiency. In particular, it yields relative F1 gains of 20% on HotpotQA (+0.093), 40% on Bamboogle (+0.151), and 91% on 2Wiki (+0.256), benefiting from improvements in the reasoning process.
format Preprint
id arxiv_https___arxiv_org_abs_2509_00877
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle EviNote-RAG: Enhancing RAG Models via Answer-Supportive Evidence Notes
Dai, Yuqin
Wang, Guoqing
Wang, Yuan
Dou, Kairan
Zhou, Kaichen
Zhang, Zhanwei
Yang, Shuo
Tang, Fei
Yin, Jun
Zeng, Pengyu
Ying, Zhenzhe
Yi, Can
Meng, Changhua
Zhou, Yuchen
Shen, Yongliang
Lu, Shuai
Computation and Language
Retrieval-Augmented Generation (RAG) has advanced open-domain question answering by incorporating external information into model reasoning. However, effectively leveraging external information to enhance reasoning presents the following challenges: (1) low signal-to-noise ratio, where answer-supportive external information is diluted by irrelevant material, and (2) error accumulation, which arises in multi-hop reasoning when incomplete or misleading information is incorporated. To address these challenges, we introduce EviNote-RAG, a framework that follows a retrieve-note-answer workflow. Instead of reasoning directly over raw external information, the model first produces Supportive-Evidence Notes (SENs), which concisely preserve answer-critical information and explicitly mark key and uncertainty information to improve accuracy. We further design an entailment-based Evidence Quality Reward (EQR) to ensure that SENs are logically sufficient to derive the final answer, thereby enhancing SENs' quality. Experiments on both in-domain and out-of-domain QA benchmarks show that EviNote-RAG achieves state-of-the-art performance, improving answer accuracy, training stability, robustness, and efficiency. In particular, it yields relative F1 gains of 20% on HotpotQA (+0.093), 40% on Bamboogle (+0.151), and 91% on 2Wiki (+0.256), benefiting from improvements in the reasoning process.
title EviNote-RAG: Enhancing RAG Models via Answer-Supportive Evidence Notes
topic Computation and Language
url https://arxiv.org/abs/2509.00877