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In this paper, we present a two stage model for multi-hop question answering. The first stage is a hierarchical graph network, which is used to reason over multi-hop question and is capable to capture different levels of granularity using…

Computation and Language · Computer Science 2025-04-15 Guanming Xiong

Multi-hop question answering is a challenging task for both large language models (LLMs) and humans, as it requires recognizing when multi-hop reasoning is needed, followed by reading comprehension, logical reasoning, and knowledge…

Human-Computer Interaction · Computer Science 2025-10-07 Jinyan Su , Claire Cardie , Jennifer Healey

In this study, we introduced a new benchmark consisting of a curated dataset and a defined evaluation process to assess the compositional reasoning capabilities of large language models within the chemistry domain. We designed and validated…

Computation and Language · Computer Science 2025-08-07 Mohammad Khodadad , Ali Shiraee Kasmaee , Mahdi Astaraki , Nicholas Sherck , Hamidreza Mahyar , Soheila Samiee

Visual Language Models (VLMs) are powerful generative tools but often produce factually inaccurate outputs due to a lack of robust reasoning capabilities. While extensive research has been conducted on integrating external knowledge for…

Artificial Intelligence · Computer Science 2025-11-26 Shamima Hossain

Question answering (QA) over tables and text has gained much popularity over the years. Multi-hop table-text QA requires multiple hops between the table and text, making it a challenging QA task. Although several works have attempted to…

Computation and Language · Computer Science 2024-10-02 Jayetri Bardhan , Bushi Xiao , Daisy Zhe Wang

Open-ended text generation tasks, such as dialogue generation and story completion, require models to generate a coherent continuation given limited preceding context. The open-ended nature of these tasks brings new challenges to the neural…

Computation and Language · Computer Science 2022-04-21 Qintong Li , Piji Li , Wei Bi , Zhaochun Ren , Yuxuan Lai , Lingpeng Kong

In multi-hop QA, answering complex questions entails iterative document retrieval for finding the missing entity of the question. The main steps of this process are sub-question detection, document retrieval for the sub-question, and…

Computation and Language · Computer Science 2021-06-21 Yeon Seonwoo , Sang-Woo Lee , Ji-Hoon Kim , Jung-Woo Ha , Alice Oh

Multi-hop textual question answering requires combining information from multiple sentences. We focus on a natural setting where, unlike typical reading comprehension, only partial information is provided with each question. The model must…

Computation and Language · Computer Science 2019-09-23 Tushar Khot , Ashish Sabharwal , Peter Clark

Multi-hop question answering (QA) requires an information retrieval (IR) system that can find \emph{multiple} supporting evidence needed to answer the question, making the retrieval process very challenging. This paper introduces an IR…

Computation and Language · Computer Science 2019-09-18 Ameya Godbole , Dilip Kavarthapu , Rajarshi Das , Zhiyu Gong , Abhishek Singhal , Hamed Zamani , Mo Yu , Tian Gao , Xiaoxiao Guo , Manzil Zaheer , Andrew McCallum

Long-form question answering (LFQA) poses a challenge as it involves generating detailed answers in the form of paragraphs, which go beyond simple yes/no responses or short factual answers. While existing QA models excel in questions with…

Computation and Language · Computer Science 2023-11-17 Pritom Saha Akash , Kashob Kumar Roy , Lucian Popa , Kevin Chen-Chuan Chang

In Textual question answering (TQA) systems, complex questions often require retrieving multiple textual fact chains with multiple reasoning steps. While existing benchmarks are limited to single-chain or single-hop retrieval scenarios. In…

Computation and Language · Computer Science 2023-05-24 Minjun Zhu , Yixuan Weng , Shizhu He , Kang Liu , Jun Zhao

In education, open-ended quiz questions have become an important tool for assessing the knowledge of students. Yet, manually preparing such questions is a tedious task, and thus automatic question generation has been proposed as a possible…

Computation and Language · Computer Science 2021-08-31 Kristiyan Vachev , Momchil Hardalov , Georgi Karadzhov , Georgi Georgiev , Ivan Koychev , Preslav Nakov

Accurately answering complex questions has consistently been a significant challenge for Large Language Models (LLMs). To address this, this paper proposes a multi-hop question decomposition method for complex questions, building upon…

Computation and Language · Computer Science 2025-09-08 Zucheng Liang , Wenxin Wei , Kaijie Zhang , Hongyi Chen

The goal of text generation is to make machines express in human language. It is one of the most important yet challenging tasks in natural language processing (NLP). Since 2014, various neural encoder-decoder models pioneered by Seq2Seq…

Computation and Language · Computer Science 2022-01-25 Wenhao Yu , Chenguang Zhu , Zaitang Li , Zhiting Hu , Qingyun Wang , Heng Ji , Meng Jiang

Multi-hop QA requires the machine to answer complex questions through finding multiple clues and reasoning, and provide explanatory evidence to demonstrate the machine reasoning process. We propose Relation Extractor-Reader and Comparator…

Computation and Language · Computer Science 2021-10-27 Ruiliu Fu , Han Wang , Xuejun Zhang , Jun Zhou , Yonghong Yan

Multi-hop question answering is widely used to evaluate the reasoning capabilities of large language models (LLMs), as it requires integrating multiple pieces of supporting knowledge to arrive at a correct answer. While prior work has…

Computation and Language · Computer Science 2026-01-13 Zhuoyi Yang , Yurun Song , Iftekhar Ahmed , Ian Harris

Intelligent personal assistant systems that are able to have multi-turn conversations with human users are becoming increasingly popular. Most previous research has been focused on using either retrieval-based or generation-based methods to…

Information Retrieval · Computer Science 2019-08-27 Liu Yang , Junjie Hu , Minghui Qiu , Chen Qu , Jianfeng Gao , W. Bruce Croft , Xiaodong Liu , Yelong Shen , Jingjing Liu

General Question Answering (QA) systems over texts require the multi-hop reasoning capability, i.e. the ability to reason with information collected from multiple passages to derive the answer. In this paper we conduct a systematic analysis…

Computation and Language · Computer Science 2019-11-01 Haoyu Wang , Mo Yu , Xiaoxiao Guo , Rajarshi Das , Wenhan Xiong , Tian Gao

Several multi-hop reading comprehension datasets have been proposed to resolve the issue of reasoning shortcuts by which questions can be answered without performing multi-hop reasoning. However, the ability of multi-hop models to perform…

Computation and Language · Computer Science 2022-10-12 Xanh Ho , Saku Sugawara , Akiko Aizawa

State-of-the-art approaches to reasoning and question answering over knowledge graphs (KGs) usually scale with the number of edges and can only be applied effectively on small instance-dependent subgraphs. In this paper, we address this…

Machine Learning · Computer Science 2021-10-28 Mattia Atzeni , Jasmina Bogojeska , Andreas Loukas