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We propose an unsupervised strategy for the selection of justification sentences for multi-hop question answering (QA) that (a) maximizes the relevance of the selected sentences, (b) minimizes the overlap between the selected facts, and (c)…

Computation and Language · Computer Science 2020-05-05 Vikas Yadav , Steven Bethard , Mihai Surdeanu

We propose a new CogQA framework for multi-hop question answering in web-scale documents. Inspired by the dual process theory in cognitive science, the framework gradually builds a \textit{cognitive graph} in an iterative process by…

Computation and Language · Computer Science 2019-06-05 Ming Ding , Chang Zhou , Qibin Chen , Hongxia Yang , Jie Tang

Recent years have witnessed impressive advances in challenging multi-hop QA tasks. However, these QA models may fail when faced with some disturbance in the input text and their interpretability for conducting multi-hop reasoning remains…

Computation and Language · Computer Science 2021-12-20 Jiayu Ding , Siyuan Wang , Qin Chen , Zhongyu Wei

Multi-hop QA requires reasoning over multiple supporting facts to answer the question. However, the existing QA models always rely on shortcuts, e.g., providing the true answer by only one fact, rather than multi-hop reasoning, which is…

Artificial Intelligence · Computer Science 2022-10-14 Wangzhen Guo , Qinkang Gong , Hanjiang Lai

Clinical Question Answering (QA) systems enable doctors to quickly access patient information from electronic health records (EHRs). However, training these systems requires significant annotated data, which is limited due to the expertise…

Computation and Language · Computer Science 2024-12-09 Fan Bai , Keith Harrigian , Joel Stremmel , Hamid Hassanzadeh , Ardavan Saeedi , Mark Dredze

In diverse professional environments, ranging from academic conferences to corporate earnings calls, the ability to anticipate audience questions stands paramount. Traditional methods, which rely on manual assessment of an audience's…

Computation and Language · Computer Science 2024-09-30 Yining Juan , Chung-Chi Chen , Hen-Hsen Huang , Hsin-Hsi Chen

The task of Question Answering (QA) has attracted significant research interest for long. Its relevance to language understanding and knowledge retrieval tasks, along with the simple setting makes the task of QA crucial for strong AI…

Computation and Language · Computer Science 2024-06-03 Vaibhav Mavi , Anubhav Jangra , Adam Jatowt

Multi-hop QA (Question Answering) is the task of finding the answer to a question across multiple documents. In recent years, a number of Deep Learning-based approaches have been proposed to tackle this complex task, as well as a few…

Computation and Language · Computer Science 2023-01-30 Yunjie He , Philip John Gorinski , Ieva Staliunaite , Pontus Stenetorp

Multi-hop question answering (MHQA) requires integrating knowledge scattered across multiple passages to derive the correct answer. Traditional retrieval-augmented generation (RAG) methods primarily focus on coarse-grained textual semantic…

Computation and Language · Computer Science 2025-08-18 Changjian Wang , Weihong Deng , Weili Guan , Quan Lu , Ning Jiang

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

This research is aimed to propose an artificial intelligence algorithm comprising an ontology-based design, text mining, and natural language processing for automatically generating gap-fill multiple choice questions (MCQs). The simulation…

Artificial Intelligence · Computer Science 2021-09-24 Pornpat Sirithumgul , Pimpaka Prasertsilp , Lorne Olfman

Multi-hop QA (MHQA) involves step-by-step reasoning to answer complex questions and find multiple relevant supporting facts. However, Existing large language models'(LLMs) reasoning ability in multi-hop question answering remains…

Computation and Language · Computer Science 2024-02-20 Jian Wu , Linyi Yang , Yuliang Ji , Wenhao Huang , Börje F. Karlsson , Manabu Okumura

NLP-powered automatic question generation (QG) techniques carry great pedagogical potential of saving educators' time and benefiting student learning. Yet, QG systems have not been widely adopted in classrooms to date. In this work, we aim…

Human-Computer Interaction · Computer Science 2022-05-03 Xu Wang , Simin Fan , Jessica Houghton , Lu Wang

Multi-hop Knowledge Base Question Answering(KBQA) aims to find the answer entity in a knowledge graph (KG), which requires multiple steps of reasoning. Existing retrieval-based approaches solve this task by concentrating on the specific…

Computation and Language · Computer Science 2023-12-20 Haowei Du , Quzhe Huang , Chen Li , Chen Zhang , Yang Li , Dongyan Zhao

We propose a query-based generative model for solving both tasks of question generation (QG) and question an- swering (QA). The model follows the classic encoder- decoder framework. The encoder takes a passage and a query as input then…

Computation and Language · Computer Science 2018-08-29 Linfeng Song , Zhiguo Wang , Wael Hamza

Question answering (QA) models for reading comprehension have been demonstrated to exploit unintended dataset biases such as question-context lexical overlap. This hinders QA models from generalizing to under-represented samples such as…

Computation and Language · Computer Science 2021-09-24 Kazutoshi Shinoda , Saku Sugawara , Akiko Aizawa

We introduce a novel retrieval-augmented generation (RAG) framework tailored for multihop question answering. First, our system uses large language model (LLM) to decompose complex multihop questions into a sequence of single-hop…

Computation and Language · Computer Science 2025-08-14 Seokgi Lee

Retrieval-augmented generation (RAG) has demonstrated strong performance in single-hop question answering (QA) by integrating external knowledge into large language models (LLMs). However, its effectiveness remains limited in multi-hop QA,…

Computation and Language · Computer Science 2026-01-13 Ningning Zhang , Chi Zhang , Zhizhong Tan , Xingxing Yang , Weiping Deng , Wenyong Wang

Text-based Question Generation (QG) aims at generating natural and relevant questions that can be answered by a given answer in some context. Existing QG models suffer from a "semantic drift" problem, i.e., the semantics of the…

Computation and Language · Computer Science 2019-09-16 Shiyue Zhang , Mohit Bansal

We propose a framework for answering open domain multi-hop questions in which partial information is read and used to generate followup questions, to finally be answered by a pretrained single-hop answer extractor. This framework makes each…

Computation and Language · Computer Science 2020-02-28 Christopher Malon , Bing Bai
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