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In knowledge-intensive tasks such as open-domain question answering (OpenQA), large language models (LLMs) often struggle to generate factual answers, relying solely on their internal (parametric) knowledge. To address this limitation,…

Computation and Language · Computer Science 2025-04-29 Jinming Nian , Zhiyuan Peng , Qifan Wang , Yi Fang

Open domain Question Answering (QA) systems must interact with external knowledge sources, such as web pages, to find relevant information. Information sources like Wikipedia, however, are not well structured and difficult to utilize in…

Computation and Language · Computer Science 2017-03-28 Yusuke Watanabe , Bhuwan Dhingra , Ruslan Salakhutdinov

Large language models have recently pushed open domain question answering (ODQA) to new frontiers. However, prevailing retriever-reader pipelines often depend on multiple rounds of prompt level instructions, leading to high computational…

Computation and Language · Computer Science 2025-09-23 Zhanghao Hu , Hanqi Yan , Qinglin Zhu , Zhenyi Shen , Yulan He , Lin Gui

Nowadays, learning increasingly involves the usage of search engines and web resources. The related interdisciplinary research field search as learning aims to understand how people learn on the web. Previous work has investigated several…

Information Retrieval · Computer Science 2024-01-11 Wolfgang Gritz , Anett Hoppe , Ralph Ewerth

This paper considers the reading comprehension task in which multiple documents are given as input. Prior work has shown that a pipeline of retriever, reader, and reranker can improve the overall performance. However, the pipeline system is…

Computation and Language · Computer Science 2019-06-12 Minghao Hu , Yuxing Peng , Zhen Huang , Dongsheng Li

This paper investigates the role of dynamic external knowledge integration in improving counter-argument generation using Large Language Models (LLMs). While LLMs have shown promise in argumentative tasks, their tendency to generate…

Computation and Language · Computer Science 2025-06-23 Anar Yeginbergen , Maite Oronoz , Rodrigo Agerri

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

This work presents a framework for assessing whether large language models (LLMs) encode more factual knowledge in their parameters than what they express in their outputs. While a few studies hint at this possibility, none has clearly…

Computation and Language · Computer Science 2025-08-07 Zorik Gekhman , Eyal Ben David , Hadas Orgad , Eran Ofek , Yonatan Belinkov , Idan Szpektor , Jonathan Herzig , Roi Reichart

Access to external knowledge is essential for many natural language processing tasks, such as question answering and dialogue. Existing methods often rely on a parametric model that stores knowledge in its parameters, or use a…

Computation and Language · Computer Science 2022-11-01 Yuxiang Wu , Yu Zhao , Baotian Hu , Pasquale Minervini , Pontus Stenetorp , Sebastian Riedel

Retrieval-Augmented Generation (RAG) enhances language models by retrieving and incorporating relevant external knowledge. However, traditional retrieve-and-generate processes may not be optimized for real-world scenarios, where queries…

Computation and Language · Computer Science 2025-02-28 Ingeol Baek , Hwan Chang , Byeongjeong Kim , Jimin Lee , Hwanhee Lee

We present a system for answering questions based on the full text of books (BookQA), which first selects book passages given a question at hand, and then uses a memory network to reason and predict an answer. To improve generalization, we…

Computation and Language · Computer Science 2019-10-03 Stefanos Angelidis , Lea Frermann , Diego Marcheggiani , Roi Blanco , Lluís Màrquez

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

Although open-domain question answering (QA) draws great attention in recent years, it requires large amounts of resources for building the full system and is often difficult to reproduce previous results due to complex configurations. In…

Computation and Language · Computer Science 2021-05-24 Xiaopeng Lu , Kyusong Lee , Tiancheng Zhao

Document-level relation extraction (Doc-RE) aims to extract relations between entities across multiple sentences. Therefore, Doc-RE requires more comprehensive reasoning abilities like humans, involving complex cross-sentence interactions…

Computation and Language · Computer Science 2025-08-05 Chengcheng Mai , Yuxiang Wang , Ziyu Gong , Hanxiang Wang , Yihua Huang

The open-ended question answering task of Text-VQA often requires reading and reasoning about rarely seen or completely unseen scene-text content of an image. We address this zero-shot nature of the problem by proposing the generalized use…

Computer Vision and Pattern Recognition · Computer Science 2022-07-18 Arka Ujjal Dey , Ernest Valveny , Gaurav Harit

As information ecosystems grow more heterogeneous, both humans and artificial agents increasingly face a simple yet unresolved question: when seeking knowledge, whom should we ask, and why? Inspired by how people intuitively "read a room",…

Human-Computer Interaction · Computer Science 2026-05-01 Irene Celino

We study open-domain question answering with structured, unstructured and semi-structured knowledge sources, including text, tables, lists and knowledge bases. Departing from prior work, we propose a unifying approach that homogenizes all…

Computation and Language · Computer Science 2022-05-05 Barlas Oguz , Xilun Chen , Vladimir Karpukhin , Stan Peshterliev , Dmytro Okhonko , Michael Schlichtkrull , Sonal Gupta , Yashar Mehdad , Scott Yih

Retrieval-augmented generation (RAG) is considered to be a promising approach to alleviate the hallucination issue of large language models (LLMs), and it has received widespread attention from researchers recently. Due to the limitation in…

Information Retrieval · Computer Science 2024-06-11 Hengran Zhang , Ruqing Zhang , Jiafeng Guo , Maarten de Rijke , Yixing Fan , Xueqi Cheng

Reading comprehension is a challenging task, especially when executed across longer or across multiple evidence documents, where the answer is likely to reoccur. Existing neural architectures typically do not scale to the entire evidence,…

Computation and Language · Computer Science 2018-06-01 Swabha Swayamdipta , Ankur P. Parikh , Tom Kwiatkowski

In simple open-domain question answering (QA), dense retrieval has become one of the standard approaches for retrieving the relevant passages to infer an answer. Recently, dense retrieval also achieved state-of-the-art results in multi-hop…

Information Retrieval · Computer Science 2021-09-23 Georgios Sidiropoulos , Nikos Voskarides , Svitlana Vakulenko , Evangelos Kanoulas