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Research in Document Intelligence and especially in Document Key Information Extraction (DocKIE) has been mainly solved as Token Classification problem. Recent breakthroughs in both natural language processing (NLP) and computer vision…

Computation and Language · Computer Science 2023-04-24 Laurent Lam , Pirashanth Ratnamogan , Joël Tang , William Vanhuffel , Fabien Caspani

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

Question-answering (QA) that comes naturally to humans is a critical component in seamless human-computer interaction. It has emerged as one of the most convenient and natural methods to interact with the web and is especially desirable in…

Computation and Language · Computer Science 2022-11-15 Deepak Gupta

We address the problem of Visual Question Answering (VQA), which requires joint image and language understanding to answer a question about a given photograph. Recent approaches have applied deep image captioning methods based on…

Computer Vision and Pattern Recognition · Computer Science 2016-03-22 Huijuan Xu , Kate Saenko

Personal information is abundant on users' devices, from structured data in calendar, shopping records or fitness tools, to unstructured contents in mail and social media posts. This works presents the ReQAP system that supports users with…

Computation and Language · Computer Science 2025-08-12 Philipp Christmann , Gerhard Weikum

Deep Research systems have revolutionized how LLMs solve complex questions through iterative reasoning and evidence gathering. However, current systems remain fundamentally constrained to textual web data, overlooking the vast knowledge…

Information Retrieval · Computer Science 2025-10-27 Kuicai Dong , Shurui Huang , Fangda Ye , Wei Han , Zhi Zhang , Dexun Li , Wenjun Li , Qu Yang , Gang Wang , Yichao Wang , Chen Zhang , Yong Liu

Multi-Hop Question Answering (MHQA) tasks permeate real-world applications, posing challenges in orchestrating multi-step reasoning across diverse knowledge domains. While existing approaches have been improved with iterative retrieval,…

Machine Learning · Computer Science 2025-10-06 Rong Cheng , Jinyi Liu , Yan Zheng , Fei Ni , Jiazhen Du , Hangyu Mao , Fuzheng Zhang , Bo Wang , Jianye Hao

Large language models augmented with task-relevant documents have demonstrated impressive performance on knowledge-intensive tasks. However, regarding how to obtain effective documents, the existing methods are mainly divided into two…

Computation and Language · Computer Science 2023-10-10 Zhangyin Feng , Xiaocheng Feng , Dezhi Zhao , Maojin Yang , Bing Qin

Translating renderings (e. g. PDFs, scans) into hierarchical document structures is extensively demanded in the daily routines of many real-world applications. However, a holistic, principled approach to inferring the complete hierarchical…

Machine Learning · Computer Science 2021-01-26 Johannes Rausch , Octavio Martinez , Fabian Bissig , Ce Zhang , Stefan Feuerriegel

Neural abstractive summarization models have led to promising results in summarizing relatively short documents. We propose the first model for abstractive summarization of single, longer-form documents (e.g., research papers). Our approach…

Computation and Language · Computer Science 2018-05-23 Arman Cohan , Franck Dernoncourt , Doo Soon Kim , Trung Bui , Seokhwan Kim , Walter Chang , Nazli Goharian

In this paper, we present a two stage model for multi-hop question answering. The first stage is a hierarchical graph network, which is used to reason over multi-hop question and is capable to capture different levels of granularity using…

Computation and Language · Computer Science 2025-04-15 Guanming Xiong

Question Answering System (QAS) is used for information retrieval and natural language processing (NLP) to reduce human effort. There are numerous QAS based on the user documents present today, but they all are limited to providing…

Computation and Language · Computer Science 2017-01-02 Ahlam Ansari , Moonish Maknojia , Altamash Shaikh

Document-based question answering (QA) increasingly includes abstract questions that require synthesizing scattered information from long documents or across multiple documents into coherent answers. However, this setting is still poorly…

Computation and Language · Computer Science 2026-05-12 Shu Wang , Shansong Zhou , Xinyang Wang , Shiwei Wang , Hulong Wu , Yixiang Fang

Answering complex questions is a time-consuming activity for humans that requires reasoning and integration of information. Recent work on reading comprehension made headway in answering simple questions, but tackling complex questions is…

Computation and Language · Computer Science 2018-03-20 Alon Talmor , Jonathan Berant

Advancements in Large Language Models (LLMs) have extended their input context length, yet they still struggle with retrieval and reasoning in long-context inputs. Existing methods propose to utilize the prompt strategy and retrieval head…

Computation and Language · Computer Science 2025-05-16 Han Peng , Jinhao Jiang , Zican Dong , Wayne Xin Zhao , Lei Fang

Recent advances regarding question answering and reading comprehension have resulted in models that surpass human performance when the answer is contained in a single, continuous passage of text, requiring only single-hop reasoning.…

Computation and Language · Computer Science 2021-01-18 Xing Cao , Yun Liu

Multi-hop Reading Comprehension (RC) requires reasoning and aggregation across several paragraphs. We propose a system for multi-hop RC that decomposes a compositional question into simpler sub-questions that can be answered by…

Computation and Language · Computer Science 2019-07-02 Sewon Min , Victor Zhong , Luke Zettlemoyer , Hannaneh Hajishirzi

Question answering (QA) systems for large document collections typically use pipelines that (i) retrieve possibly relevant documents, (ii) re-rank them, (iii) rank paragraphs or other snippets of the top-ranked documents, and (iv) select…

Information Retrieval · Computer Science 2021-06-17 Dimitris Pappas , Ion Androutsopoulos

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

This paper proposes a novel architecture to generate multi-hop answers to open domain questions that require information from texts and tables, using the Open Table-and-Text Question Answering dataset for validation and training. One of the…

Computation and Language · Computer Science 2025-02-21 Marcos M. José , Flávio N. Cação , Maria F. Ribeiro , Rafael M. Cheang , Paulo Pirozelli , Fabio G. Cozman
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