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Search engines based on keyword retrieval can no longer adapt to the way of information acquisition in the era of intelligent Internet of Things due to the return of keyword related Internet pages. How to quickly, accurately and effectively…

Computation and Language · Computer Science 2022-01-03 Gaochen Wu , Bin Xu , Yuxin Qin , Yang Liu , Lingyu Liu , Ziwei Wang

Recently, retrieval systems based on dense representations have led to important improvements in open-domain question answering, and related tasks. While very effective, this approach is also memory intensive, as the dense vectors for the…

Computation and Language · Computer Science 2021-01-01 Gautier Izacard , Fabio Petroni , Lucas Hosseini , Nicola De Cao , Sebastian Riedel , Edouard Grave

The current state-of-the-art generative models for open-domain question answering (ODQA) have focused on generating direct answers from unstructured textual information. However, a large amount of world's knowledge is stored in structured…

Computation and Language · Computer Science 2021-12-09 Alexander Hanbo Li , Patrick Ng , Peng Xu , Henghui Zhu , Zhiguo Wang , Bing Xiang

Recently, large language models (LLMs) have gained much attention for the emergence of human-comparable capabilities and huge potential. However, for open-domain implicit question-answering problems, LLMs may not be the ultimate solution…

Computation and Language · Computer Science 2026-03-10 Chang Liu , Xiaoguang Li , Lifeng Shang , Xin Jiang , Qun Liu , Edmund Y. Lam , Ngai Wong

In this paper, we introduce and apply Operations Research Question Answering (ORQA), a new benchmark designed to assess the generalization capabilities of Large Language Models (LLMs) in the specialized technical domain of Operations…

Visual Question Answering (VQA) has attracted much attention since it offers insight into the relationships between the multi-modal analysis of images and natural language. Most of the current algorithms are incapable of answering…

Computer Vision and Pattern Recognition · Computer Science 2017-12-05 Guohao Li , Hang Su , Wenwu Zhu

Open-domain question answering (OpenQA) is an important branch of textual QA which discovers answers for the given questions based on a large number of unstructured documents. Effectively mining correct answers from the open-domain sources…

Computation and Language · Computer Science 2022-04-04 Tingting Liang , Yixuan Jiang , Congying Xia , Ziqiang Zhao , Yuyu Yin , Philip S. Yu

Open-domain conversational question answering can be viewed as two tasks: passage retrieval and conversational question answering, where the former relies on selecting candidate passages from a large corpus and the latter requires better…

Computation and Language · Computer Science 2022-11-18 Hung-Chieh Fang , Kuo-Han Hung , Chao-Wei Huang , Yun-Nung Chen

Large language Models (LLMs) are usually used to answer questions, but many high-stakes applications (e.g., tutoring, clinical support) require the complementary skill of asking questions: detecting missing information, requesting…

Artificial Intelligence · Computer Science 2026-01-07 Rajeev Bhatt Ambati , Tianyi Niu , Aashu Singh , Shlok Mishra , Snigdha Chaturvedi , Shashank Srivastava

Question Answering (QA) is one of the most important natural language processing (NLP) tasks. It aims using NLP technologies to generate a corresponding answer to a given question based on the massive unstructured corpus. With the…

Computation and Language · Computer Science 2022-07-01 Zhen Wang

While research on explaining predictions of open-domain QA systems (ODQA) to users is gaining momentum, most works have failed to evaluate the extent to which explanations improve user trust. While few works evaluate explanations using user…

Computation and Language · Computer Science 2021-01-01 Ana Valeria Gonzalez , Gagan Bansal , Angela Fan , Robin Jia , Yashar Mehdad , Srinivasan Iyer

Open-domain complex Question Answering (QA) is a difficult task with challenges in evidence retrieval and reasoning. The complexity of such questions could stem from questions being compositional, hybrid evidence, or ambiguity in questions.…

Computation and Language · Computer Science 2024-06-26 Venktesh V. Deepali Prabhu , Avishek Anand

Over the last twenty years, significant progress has been made in designing and implementing Question Answering (QA) systems. However, addressing complex questions, the answers to which are spread across multiple documents, remains a…

Computation and Language · Computer Science 2026-02-26 Sourav Saha , Dwaipayan Roy , Mandar Mitra

State-of-the-art extractive question-answering models achieve superhuman performances on the SQuAD benchmark. Yet, they are unreasonably heavy and need expensive GPU computing to answer questions in a reasonable time. Thus, they cannot be…

Computation and Language · Computer Science 2025-03-11 Sofian Chaybouti , Achraf Saghe , Aymen Shabou

Open-Domain Question Answering (ODQA) aims to answer questions without explicitly providing specific background documents. This task becomes notably challenging in a zero-shot setting where no data is available to train tailored…

Computation and Language · Computer Science 2024-03-29 Junlong Li , Jinyuan Wang , Zhuosheng Zhang , Hai Zhao

Time plays a critical role in how information is generated, retrieved, and interpreted. In this survey, we provide a comprehensive overview of Temporal Question Answering (TQA), a research area that focuses on answering questions involving…

Computation and Language · Computer Science 2026-04-24 Bhawna Piryani , Abdelrahman Abdallah , Jamshid Mozafari , Avishek Anand , Adam Jatowt

The usage and amount of information available on the internet increase over the past decade. This digitization leads to the need for automated answering system to extract fruitful information from redundant and transitional knowledge…

Computation and Language · Computer Science 2022-02-03 Hariom A. Pandya , Brijesh S. Bhatt

Table Question Answering (TQA) aims to answer natural language questions about tabular data, often accompanied by additional contexts such as text passages. The task spans diverse settings, varying in table representation, question/answer…

Computation and Language · Computer Science 2026-04-21 Wei Zhou , Bolei Ma , Annemarie Friedrich , Mohsen Mesgar

Open Domain Multi-Hop Question Answering (ODMHQA) plays a crucial role in Natural Language Processing (NLP) by aiming to answer complex questions through multi-step reasoning over retrieved information from external knowledge sources.…

Computation and Language · Computer Science 2024-03-20 Yuan Gao , Yiheng Zhu , Yuanbin Cao , Yinzhi Zhou , Zhen Wu , Yujie Chen , Shenglan Wu , Haoyuan Hu , Xinyu Dai

Open-domain Question Answering (OpenQA) aims at answering factual questions with an external large-scale knowledge corpus. However, real-world knowledge is not static; it updates and evolves continually. Such a dynamic characteristic of…

Computation and Language · Computer Science 2024-04-03 Zixuan Zhang , Revanth Gangi Reddy , Kevin Small , Tong Zhang , Heng Ji