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Large Language Models (LLMs) and Knowledge Graphs (KGs) offer a promising approach to robust and explainable Question Answering (QA). While LLMs excel at natural language understanding, they suffer from knowledge gaps and hallucinations.…

Machine Learning · Computer Science 2025-04-15 Jasper Linders , Jakub M. Tomczak

Knowledge Base Question Answering (KBQA) aims to answer natural language questions over large-scale knowledge bases (KBs), which can be summarized into two crucial steps: knowledge retrieval and semantic parsing. However, three core…

Computation and Language · Computer Science 2024-10-31 Haoran Luo , Haihong E , Zichen Tang , Shiyao Peng , Yikai Guo , Wentai Zhang , Chenghao Ma , Guanting Dong , Meina Song , Wei Lin , Yifan Zhu , Luu Anh Tuan

Synthetic data generation has recently emerged as a promising approach for enhancing the capabilities of large language models (LLMs) without the need for expensive human annotations. However, existing methods often generate data that can…

Computation and Language · Computer Science 2025-08-21 Alisia Lupidi , Carlos Gemmell , Nicola Cancedda , Jane Dwivedi-Yu , Jason Weston , Jakob Foerster , Roberta Raileanu , Maria Lomeli

For middle-school math students, interactive question-answering (QA) with tutors is an effective way to learn. The flexibility and emergent capabilities of generative large language models (LLMs) has led to a surge of interest in automating…

Computation and Language · Computer Science 2023-11-14 Zachary Levonian , Chenglu Li , Wangda Zhu , Anoushka Gade , Owen Henkel , Millie-Ellen Postle , Wanli Xing

To address the hallucination in generative question answering (GQA) where the answer can not be derived from the document, we propose a novel evidence-enhanced triplet generation framework, EATQA, encouraging the model to predict all the…

Computation and Language · Computer Science 2024-08-28 Haowei Du , Huishuai Zhang , Dongyan Zhao

Question-answering software is becoming increasingly integrated into our daily lives, with prominent examples including Apple Siri and Amazon Alexa. Ensuring the quality of such systems is critical, as incorrect answers could lead to…

Software Engineering · Computer Science 2025-11-12 Shuang Liu , Zhirun Zhang , Jinhao Dong , Zan Wang , Qingchao Shen , Junjie Chen , Wei Lu , Xiaoyong Du

With the enhancement in the field of generative artificial intelligence (AI), contextual question answering has become extremely relevant. Attributing model generations to the input source document is essential to ensure trustworthiness and…

Computation and Language · Computer Science 2024-05-29 Anirudh Phukan , Shwetha Somasundaram , Apoorv Saxena , Koustava Goswami , Balaji Vasan Srinivasan

Conversational question answering (CQA) facilitates an incremental and interactive understanding of a given context, but building a CQA system is difficult for many domains due to the problem of data scarcity. In this paper, we introduce a…

Computation and Language · Computer Science 2022-10-25 Seonjeong Hwang , Yunsu Kim , Gary Geunbae Lee

Large Language Models (LLMs), such as ChatGPT, have recently been applied to various NLP tasks due to its open-domain generation capabilities. However, there are two issues with applying LLMs to dialogue tasks. 1. During the dialogue…

Computation and Language · Computer Science 2023-10-06 Siwei Wu , Xiangqing Shen , Rui Xia

Training conversational question-answering (QA) systems requires a substantial amount of in-domain data, which is often scarce in practice. A common solution to this challenge is to generate synthetic data. Traditional methods typically…

Machine Learning · Computer Science 2025-04-22 Kun Qian , Maximillian Chen , Siyan Li , Arpit Sharma , Zhou Yu

Competency question (CQ) formulation is central to several ontology development and evaluation methodologies. Traditionally, the task of crafting these competency questions heavily relies on the effort of domain experts and knowledge…

Artificial Intelligence · Computer Science 2025-02-13 Xueli Pan , Jacco van Ossenbruggen , Victor de Boer , Zhisheng Huang

As artificial intelligence permeates judicial forensics, ensuring the veracity and traceability of legal question answering (QA) has become critical. Conventional large language models (LLMs) are prone to hallucination, risking misleading…

Artificial Intelligence · Computer Science 2025-11-18 Yueqing Xi , Yifan Bai , Huasen Luo , Weiliang Wen , Hui Liu , Haoliang Li

Long-form question answering (LFQA) tasks require retrieving the documents pertinent to a query, using them to form a paragraph-length answer. Despite considerable progress in LFQA modeling, fundamental issues impede its progress: i)…

Computation and Language · Computer Science 2021-12-28 Suchismit Mahapatra , Vladimir Blagojevic , Pablo Bertorello , Prasanna Kumar

To date, most of recent work under the retrieval-reader framework for open-domain QA focuses on either extractive or generative reader exclusively. In this paper, we study a hybrid approach for leveraging the strengths of both models. We…

Computation and Language · Computer Science 2021-06-04 Hao Cheng , Yelong Shen , Xiaodong Liu , Pengcheng He , Weizhu Chen , Jianfeng Gao

Hallucinations in large language models (LLMs), defined as fluent yet incorrect or incoherent outputs, pose a significant challenge to the automatic generation of educational multiple-choice questions (MCQs). We identified four key…

Computation and Language · Computer Science 2026-01-22 Nicholas X. Wang , Aggelos K. Katsaggelos

The development of Large Language Models (LLMs) has brought impressive performances on mitigation strategies against misinformation, such as counterargument generation. However, LLMs are still seriously hindered by outdated knowledge and by…

Computation and Language · Computer Science 2024-10-21 Blanca Calvo Figueras , Rodrigo Agerri

Large Language Models (LLMs) have shown remarkable capabilities across tasks, yet they often require additional prompting techniques when facing complex problems. While approaches like self-correction and response selection have emerged as…

Computation and Language · Computer Science 2025-04-15 Zichong Li , Xinyu Feng , Yuheng Cai , Zixuan Zhang , Tianyi Liu , Chen Liang , Weizhu Chen , Haoyu Wang , Tuo Zhao

Multi-modal retrieval-augmented Question Answering (MRAQA), integrating text and images, has gained significant attention in information retrieval (IR) and natural language processing (NLP). Traditional ranking methods rely on small…

Computation and Language · Computer Science 2025-01-24 Yang Bai , Christan Earl Grant , Daisy Zhe Wang

Long-Context Question Answering (LCQA), a challenging task, aims to reason over long-context documents to yield accurate answers to questions. Existing long-context Large Language Models (LLMs) for LCQA often struggle with the "lost in the…

Computation and Language · Computer Science 2024-11-04 Qingfei Zhao , Ruobing Wang , Yukuo Cen , Daren Zha , Shicheng Tan , Yuxiao Dong , Jie Tang

Question Generation (QG) is a task of Natural Language Processing (NLP) that aims at automatically generating questions from text. Many applications can benefit from automatically generated questions, but often it is necessary to curate…

Computation and Language · Computer Science 2023-04-27 Hugo Rodrigues , Eric Nyberg , Luisa Coheur