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Multi-hop knowledge based question answering (KBQA) is a complex task for natural language understanding. Many KBQA approaches have been proposed in recent years, and most of them are trained based on labeled reasoning path. This hinders…

Machine Learning · Computer Science 2020-05-25 Kechen Qin , Yu Wang , Cheng Li , Kalpa Gunaratna , Hongxia Jin , Virgil Pavlu , Javed A. Aslam

The rise of personal assistants has made conversational question answering (ConvQA) a very popular mechanism for user-system interaction. State-of-the-art methods for ConvQA over knowledge graphs (KGs) can only learn from crisp…

Information Retrieval · Computer Science 2021-08-23 Magdalena Kaiser , Rishiraj Saha Roy , Gerhard Weikum

We implement a method for re-ranking top-10 results of a state-of-the-art question answering (QA) system. The goal of our re-ranking approach is to improve the answer selection given the user question and the top-10 candidates. We focus on…

Machine Learning · Computer Science 2021-06-17 Michael Barz , Daniel Sonntag

In this study, we investigate the enhancement of the GPT Neo 125M performance in Community Question Answering (CQA) with a focus on programming, through the integration of Reinforcement Learning from Human Feedback (RLHF) and the…

Computation and Language · Computer Science 2024-01-22 Alexey Gorbatovski , Sergey Kovalchuk

Question answering over knowledge bases is considered a difficult problem due to the challenge of generalizing to a wide variety of possible natural language questions. Additionally, the heterogeneity of knowledge base schema items between…

Computation and Language · Computer Science 2023-05-05 Tianle Li , Xueguang Ma , Alex Zhuang , Yu Gu , Yu Su , Wenhu Chen

We focus on multiple-choice question answering (QA) tasks in subject areas such as science, where we require both broad background knowledge and the facts from the given subject-area reference corpus. In this work, we explore simple yet…

Computation and Language · Computer Science 2019-10-03 Xiaoman Pan , Kai Sun , Dian Yu , Jianshu Chen , Heng Ji , Claire Cardie , Dong Yu

With the rapid growth of knowledge bases (KBs) on the web, how to take full advantage of them becomes increasingly important. Knowledge base-based question answering (KB-QA) is one of the most promising approaches to access the substantial…

Information Retrieval · Computer Science 2016-06-06 Yuanzhe Zhang , Kang Liu , Shizhu He , Guoliang Ji , Zhanyi Liu , Hua Wu , Jun Zhao

This paper describes the solutions of the Dianping-Trust-Safety team for the META CRAG-MM challenge. The challenge requires building a comprehensive retrieval-augmented generation system capable for multi-modal multi-turn question…

Artificial Intelligence · Computer Science 2026-01-15 Chenliang Zhang , Lin Wang , Yuanyuan Lu , Yusheng Qi , Kexin Wang , Peixu Hou , Wenshi Chen

Question answering (QA) has become a popular way for humans to access billion-scale knowledge bases. Unlike web search, QA over a knowledge base gives out accurate and concise results, provided that natural language questions can be…

Computation and Language · Computer Science 2019-03-07 Wanyun Cui , Yanghua Xiao , Haixun Wang , Yangqiu Song , Seung-won Hwang , Wei Wang

This paper proposes a novel training method to improve the robustness of Extractive Question Answering (EQA) models. Previous research has shown that existing models, when trained on EQA datasets that include unanswerable questions,…

Computation and Language · Computer Science 2024-10-01 Son Quoc Tran , Matt Kretchmar

The emergence of structured databases for Question Answering (QA) systems has led to developing methods, in which the problem of learning the correct answer efficiently is based on a linking task between the constituents of the question and…

Machine Learning · Computer Science 2020-03-05 Hamid Zafar , Maryam Tavakol , Jens Lehmann

Knowledge Base Question Answering (KBQA) aims to answer natural language questions with the help of an external knowledge base. The core idea is to find the link between the internal knowledge behind questions and known triples of the…

Computation and Language · Computer Science 2022-05-03 Hanyu Zhao , Sha Yuan , Jiahong Leng , Xiang Pan , Guoqiang Wang , Ledell Wu , Jie Tang

Multi-hop question answering (QA) requires reasoning over multiple documents to answer a complex question and provide interpretable supporting evidence. However, providing supporting evidence is not enough to demonstrate that a model has…

Computation and Language · Computer Science 2022-09-16 Zhenyun Deng , Yonghua Zhu , Yang Chen , Qianqian Qi , Michael Witbrock , Patricia Riddle

One of the challenges in large-scale information retrieval (IR) is to develop fine-grained and domain-specific methods to answer natural language questions. Despite the availability of numerous sources and datasets for answer retrieval,…

Computation and Language · Computer Science 2019-11-28 Asma Ben Abacha , Dina Demner-Fushman

A question answering (QA) system is a type of conversational AI that generates natural language answers to questions posed by human users. QA systems often form the backbone of interactive dialogue systems, and have been studied extensively…

Software Engineering · Computer Science 2021-01-12 Aakash Bansal , Zachary Eberhart , Lingfei Wu , Collin McMillan

Knowledge base question answering (KBQA)is an important task in Natural Language Processing. Existing approaches face significant challenges including complex question understanding, necessity for reasoning, and lack of large end-to-end…

Recent progress in Learning by Reading and Machine Reading systems has significantly increased the capacity of knowledge-based systems to learn new facts. In this work, we discuss the problem of selecting a set of learning requests for…

Artificial Intelligence · Computer Science 2025-02-18 Abhishek Sharma

Knowledge base question answering (KBQA) has attracted a lot of interest in recent years, especially for complex questions which require multiple facts to answer. Question decomposition is a promising way to answer complex questions.…

Computation and Language · Computer Science 2023-06-14 Xiang Huang , Sitao Cheng , Yiheng Shu , Yuheng Bao , Yuzhong Qu

In the realm of multimodal tasks, Visual Question Answering (VQA) plays a crucial role by addressing natural language questions grounded in visual content. Knowledge-Based Visual Question Answering (KBVQA) advances this concept by adding…

Computation and Language · Computer Science 2024-06-17 Manas Jhalani , Annervaz K M , Pushpak Bhattacharyya

Many question answering (QA) tasks only provide weak supervision for how the answer should be computed. For example, TriviaQA answers are entities that can be mentioned multiple times in supporting documents, while DROP answers can be…

Computation and Language · Computer Science 2019-09-12 Sewon Min , Danqi Chen , Hannaneh Hajishirzi , Luke Zettlemoyer