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This paper proposes a group deliberation oriented multi-agent conversational model to address the limitations of single large language models in complex reasoning tasks. The model adopts a three-level role division architecture consisting…

Artificial Intelligence · Computer Science 2026-01-01 Zheyu Shi , Dong Qiu , Shanlong Yu

When answering complex questions, people can seamlessly combine information from visual, textual and tabular sources. While interest in models that reason over multiple pieces of evidence has surged in recent years, there has been…

Computation and Language · Computer Science 2021-04-14 Alon Talmor , Ori Yoran , Amnon Catav , Dan Lahav , Yizhong Wang , Akari Asai , Gabriel Ilharco , Hannaneh Hajishirzi , Jonathan Berant

This paper proposes a novel architecture to generate multi-hop answers to open domain questions that require information from texts and tables, using the Open Table-and-Text Question Answering dataset for validation and training. One of the…

Computation and Language · Computer Science 2025-02-21 Marcos M. José , Flávio N. Cação , Maria F. Ribeiro , Rafael M. Cheang , Paulo Pirozelli , Fabio G. Cozman

Event argument extraction has long been studied as a sequential prediction problem with extractive-based methods, tackling each argument in isolation. Although recent work proposes generation-based methods to capture cross-argument…

Computation and Language · Computer Science 2022-11-15 Xinya Du , Heng Ji

Knowledge-intensive multi-hop question answering (QA) tasks, which require integrating evidence from multiple sources to address complex queries, often necessitate multiple rounds of retrieval and iterative generation by large language…

Computation and Language · Computer Science 2025-06-24 Binquan Ji , Haibo Luo , Yifei Lu , Lei Hei , Jiaqi Wang , Tingjing Liao , Lingyu Wang , Shichao Wang , Feiliang Ren

This paper addresses the problem of generating questions from a given context and an answer, specifically focusing on questions that require multi-hop reasoning across an extended context. Previous studies have suggested that key phrase…

Computation and Language · Computer Science 2023-10-24 Zehua Xia , Qi Gou , Bowen Yu , Haiyang Yu , Fei Huang , Yongbin Li , Cam-Tu Nguyen

Transformers have become the gold standard for many natural language processing tasks and, in particular, for multi-hop question answering (MHQA). This task includes processing a long document and reasoning over the multiple parts of it.…

Computation and Language · Computer Science 2023-12-01 Alsu Sagirova , Mikhail Burtsev

In response to the increasing use of interactive artificial intelligence, the demand for the capacity to handle complex questions has increased. Multi-hop question generation aims to generate complex questions that requires multi-step…

Computation and Language · Computer Science 2024-04-02 Seonjeong Hwang , Yunsu Kim , Gary Geunbae Lee

Retrieval-Augmented Generation (RAG) shows impressive performance by supplementing and substituting parametric knowledge in Large Language Models (LLMs). Retrieved knowledge can be divided into three types: explicit answer evidence,…

Computation and Language · Computer Science 2025-08-05 Zhichao Yan , Jiapu Wang , Jiaoyan Chen , Yanyan Wang , Hongye Tan , Jiye Liang , Xiaoli Li , Ru Li , Jeff Z. Pan

Task-oriented conversational modeling with unstructured knowledge access, as track 1 of the 9th Dialogue System Technology Challenges (DSTC 9), requests to build a system to generate response given dialogue history and knowledge access.…

Computation and Language · Computer Science 2020-12-23 Chao-Hong Tan , Xiaoyu Yang , Zi'ou Zheng , Tianda Li , Yufei Feng , Jia-Chen Gu , Quan Liu , Dan Liu , Zhen-Hua Ling , Xiaodan Zhu

Multi-hop question answering is a challenging task with distinct industrial relevance, and Retrieval-Augmented Generation (RAG) methods based on large language models (LLMs) have become a popular approach to tackle this task. Owing to the…

Computation and Language · Computer Science 2025-01-31 Zhouyu Jiang , Mengshu Sun , Lei Liang , Zhiqiang Zhang

Recent work on open domain question answering (QA) assumes strong supervision of the supporting evidence and/or assumes a blackbox information retrieval (IR) system to retrieve evidence candidates. We argue that both are suboptimal, since…

Computation and Language · Computer Science 2019-07-01 Kenton Lee , Ming-Wei Chang , Kristina Toutanova

Retrieval-augmented generation (RAG) methods encounter difficulties when addressing complex questions like multi-hop queries. While iterative retrieval methods improve performance by gathering additional information, current approaches…

Computation and Language · Computer Science 2024-09-27 Ziyuan Zhuang , Zhiyang Zhang , Sitao Cheng , Fangkai Yang , Jia Liu , Shujian Huang , Qingwei Lin , Saravan Rajmohan , Dongmei Zhang , Qi Zhang

Multi-hop question answering (QA) is a challenging task requiring QA systems to perform complex reasoning over multiple documents and provide supporting facts together with the exact answer. Existing works tend to utilize graph-based…

Computation and Language · Computer Science 2022-05-25 Xin-Yi Li , Wei-Jun Lei , Yu-Bin Yang

Question answering (QA) models often rely on large-scale training datasets, which necessitates the development of a data generation framework to reduce the cost of manual annotations. Although several recent studies have aimed to generate…

Computation and Language · Computer Science 2023-02-07 Seongyun Lee , Hyunjae Kim , Jaewoo Kang

Researchers produce thousands of scholarly documents containing valuable technical knowledge. The community faces the laborious task of reading these documents to identify, extract, and synthesize information. To automate information…

Computation and Language · Computer Science 2023-12-13 Tavish McDonald , Brian Tsan , Amar Saini , Juanita Ordonez , Luis Gutierrez , Phan Nguyen , Blake Mason , Brenda Ng

Video question answering that requires external knowledge beyond the visual content remains a significant challenge in AI systems. While models can effectively answer questions based on direct visual observations, they often falter when…

Information Retrieval · Computer Science 2025-02-19 Md Zarif Ul Alam , Hamed Zamani

Recent work on Event Extraction has reframed the task as Question Answering (QA), with promising results. The advantage of this approach is that it addresses the error propagation issue found in traditional token-based classification…

Computation and Language · Computer Science 2023-07-13 Di Lu , Shihao Ran , Joel Tetreault , Alejandro Jaimes

Multi-hop reasoning requires aggregating multiple documents to answer a complex question. Existing methods usually decompose the multi-hop question into simpler single-hop questions to solve the problem for illustrating the explainable…

Computation and Language · Computer Science 2022-08-23 Siyuan Wang , Zhongyu Wei , Zhihao Fan , Qi Zhang , Xuanjing Huang

Article comprehension is an important challenge in natural language processing with many applications such as article generation or image-to-article retrieval. Prior work typically encodes all tokens in articles uniformly using pretrained…

Computation and Language · Computer Science 2023-10-24 Zhongping Zhang , Yiwen Gu , Bryan A. Plummer