@inproceedings{tang-etal-2025-comprehensive,
title = "A Comprehensive Graph Framework for Question Answering with Mode-Seeking Preference Alignment",
author = "Tang, Quanwei and
Lee, Sophia Yat Mei and
Wu, Junshuang and
Zhang, Dong and
Li, Shoushan and
Cambria, Erik and
Zhou, Guodong",
editor = "Che, Wanxiang and
Nabende, Joyce and
Shutova, Ekaterina and
Pilehvar, Mohammad Taher",
booktitle = "Findings of the Association for Computational Linguistics: ACL 2025",
month = jul,
year = "2025",
address = "Vienna, Austria",
publisher = "Association for Computational Linguistics",
url = "https://aclanthology.org/2025.findings-acl.1108/",
doi = "10.18653/v1/2025.findings-acl.1108",
pages = "21504--21523",
ISBN = "979-8-89176-256-5",
abstract = "Recent advancements in retrieval-augmented generation (RAG) have enhanced large language models in question answering by integrating external knowledge. However, challenges persist in achieving global understanding and aligning responses with human ethical and quality preferences. To address these issues, we propose GraphMPA, a comprehensive graph-based framework with mode-seeking preference alignment. Our approach constructs a hierarchical document graph using a general similarity measurement, mimicking human cognitive processes for information understanding and synthesis. Additionally, we introduce mode-seeking preference optimization to better align model outputs with human preferences through probability-matching constraints. Extensive experiments on six datasets demonstrate the effectiveness of our GraphMPA."
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<abstract>Recent advancements in retrieval-augmented generation (RAG) have enhanced large language models in question answering by integrating external knowledge. However, challenges persist in achieving global understanding and aligning responses with human ethical and quality preferences. To address these issues, we propose GraphMPA, a comprehensive graph-based framework with mode-seeking preference alignment. Our approach constructs a hierarchical document graph using a general similarity measurement, mimicking human cognitive processes for information understanding and synthesis. Additionally, we introduce mode-seeking preference optimization to better align model outputs with human preferences through probability-matching constraints. Extensive experiments on six datasets demonstrate the effectiveness of our GraphMPA.</abstract>
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%0 Conference Proceedings
%T A Comprehensive Graph Framework for Question Answering with Mode-Seeking Preference Alignment
%A Tang, Quanwei
%A Lee, Sophia Yat Mei
%A Wu, Junshuang
%A Zhang, Dong
%A Li, Shoushan
%A Cambria, Erik
%A Zhou, Guodong
%Y Che, Wanxiang
%Y Nabende, Joyce
%Y Shutova, Ekaterina
%Y Pilehvar, Mohammad Taher
%S Findings of the Association for Computational Linguistics: ACL 2025
%D 2025
%8 July
%I Association for Computational Linguistics
%C Vienna, Austria
%@ 979-8-89176-256-5
%F tang-etal-2025-comprehensive
%X Recent advancements in retrieval-augmented generation (RAG) have enhanced large language models in question answering by integrating external knowledge. However, challenges persist in achieving global understanding and aligning responses with human ethical and quality preferences. To address these issues, we propose GraphMPA, a comprehensive graph-based framework with mode-seeking preference alignment. Our approach constructs a hierarchical document graph using a general similarity measurement, mimicking human cognitive processes for information understanding and synthesis. Additionally, we introduce mode-seeking preference optimization to better align model outputs with human preferences through probability-matching constraints. Extensive experiments on six datasets demonstrate the effectiveness of our GraphMPA.
%R 10.18653/v1/2025.findings-acl.1108
%U https://aclanthology.org/2025.findings-acl.1108/
%U https://doi.org/10.18653/v1/2025.findings-acl.1108
%P 21504-21523
Markdown (Informal)
[A Comprehensive Graph Framework for Question Answering with Mode-Seeking Preference Alignment](https://aclanthology.org/2025.findings-acl.1108/) (Tang et al., Findings 2025)
ACL