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In this report, we introduce DocXChain, a powerful open-source toolchain for document parsing, which is designed and developed to automatically convert the rich information embodied in unstructured documents, such as text, tables and…

Computer Vision and Pattern Recognition · Computer Science 2023-10-20 Cong Yao

Document Structured Extraction (DSE) aims to extract structured content from raw documents. Despite the emergence of numerous DSE systems, their unified evaluation remains inadequate, significantly hindering the field's advancement. This…

Computation and Language · Computer Science 2025-07-15 Zichao Li , Aizier Abulaiti , Yaojie Lu , Xuanang Chen , Jia Zheng , Hongyu Lin , Xianpei Han , Le Sun

Table Detection (TD) is a fundamental task to enable visually rich document understanding, which requires the model to extract information without information loss. However, popular Intersection over Union (IoU) based evaluation metrics and…

Computer Vision and Pattern Recognition · Computer Science 2023-12-07 Bin Xiao , Murat Simsek , Burak Kantarci , Ala Abu Alkheir

Forms are a common type of document in real life and carry rich information through textual contents and the organizational structure. To realize automatic processing of forms, word grouping and relation extraction are two fundamental and…

Computation and Language · Computer Science 2021-05-12 Zilong Wang , Mingjie Zhan , Houxing Ren , Zhaohui Hou , Yuwei Wu , Xingyan Zhang , Ding Liang

In this paper, we propose a novel method for joint entity and relation extraction from unstructured text by framing it as a conditional sequence generation problem. In contrast to conventional generative information extraction models that…

Computation and Language · Computer Science 2024-01-17 Urchade Zaratiana , Nadi Tomeh , Pierre Holat , Thierry Charnois

This study explores three approaches to processing table data in scientific papers to enhance extractive question answering and develop a software tool for the systematic review process. The methods evaluated include: (1) Optical Character…

Information Retrieval · Computer Science 2025-08-27 Dongyoun Kim , Hyung-do Choi , Youngsun Jang , John Kim

Optical Character Recognition (OCR) for mathematical formula is essential for the intelligent analysis of scientific literature. However, both task-specific and general vision-language models often struggle to handle the structural…

Computer Vision and Pattern Recognition · Computer Science 2025-08-04 Yufeng Zhong , Zhixiong Zeng , Lei Chen , Longrong Yang , Liming Zheng , Jing Huang , Siqi Yang , Lin Ma

In recent years, tremendous efforts have been made on document image rectification, but existing advanced algorithms are limited to processing restricted document images, i.e., the input images must incorporate a complete document. Once the…

Computer Vision and Pattern Recognition · Computer Science 2023-12-19 Hao Feng , Shaokai Liu , Jiajun Deng , Wengang Zhou , Houqiang Li

Extracting useful signals or pattern to support important business decisions for example analyzing investment product traction and discovering customer preference, risk monitoring etc. from unstructured text is a challenging task. Capturing…

Computation and Language · Computer Science 2025-06-03 Anshika Rawal , Abhijeet Kumar , Mridul Mishra

We present a new method that views object detection as a direct set prediction problem. Our approach streamlines the detection pipeline, effectively removing the need for many hand-designed components like a non-maximum suppression…

Computer Vision and Pattern Recognition · Computer Science 2020-05-29 Nicolas Carion , Francisco Massa , Gabriel Synnaeve , Nicolas Usunier , Alexander Kirillov , Sergey Zagoruyko

Capturing the compositional process which maps the meaning of words to that of documents is a central challenge for researchers in Natural Language Processing and Information Retrieval. We introduce a model that is able to represent the…

Computation and Language · Computer Science 2014-06-17 Misha Denil , Alban Demiraj , Nal Kalchbrenner , Phil Blunsom , Nando de Freitas

Recent proliferation in the field of Machine Learning and Deep Learning allows us to generate OCR models with higher accuracy. Optical Character Recognition(OCR) is the process of extracting text from documents and scanned images. For…

Computer Vision and Pattern Recognition · Computer Science 2020-09-15 Shreeshiv Patel , Dvijesh Bhatt

Document information extraction tasks performed by humans create data consisting of a PDF or document image input, and extracted string outputs. This end-to-end data is naturally consumed and produced when performing the task because it is…

Computation and Language · Computer Science 2021-04-26 Rasmus Berg Palm , Florian Laws , Ole Winther

This paper proposes OCR++, an open-source framework designed for a variety of information extraction tasks from scholarly articles including metadata (title, author names, affiliation and e-mail), structure (section headings and body text,…

Document understanding aims to perform question answering and information extraction over document images, where the visual content is highly information-dense and most queries rely on only a few relevant layout regions. However, existing…

Artificial Intelligence · Computer Science 2026-05-27 Ye Mo , Kai Ye , Xianwei Mao , Zirui Shao , Gang Huang , Bo Zhang , Hangdi Xing , Kehan Chen , Huan Zhou , Zixu Yan , Jiajun Bu , Sheng Zhou

Entity retrieval is the task of finding entities such as people or products in response to a query, based solely on the textual documents they are associated with. Recent semantic entity retrieval algorithms represent queries and experts in…

Information Retrieval · Computer Science 2017-07-26 Christophe Van Gysel , Maarten de Rijke , Evangelos Kanoulas

Dictionary-based entity extraction involves finding mentions of dictionary entities in text. Text mentions are often noisy, containing spurious or missing words. Efficient algorithms for detecting approximate entity mentions follow one of…

Databases · Computer Science 2015-12-17 Ndapandula Nakashole

Abstract--- Table detection and extraction has been studied in the context of documents like reports, where tables are clearly outlined and stand out from the document structure visually. We study this topic in a rather more challenging…

Information Retrieval · Computer Science 2021-08-20 Martin Holeček , Antonín Hoskovec , Petr Baudiš , Pavel Klinger

In the rapidly evolving field of scientific research, efficiently extracting key information from the burgeoning volume of scientific papers remains a formidable challenge. This paper introduces an innovative framework designed to automate…

Information Retrieval · Computer Science 2024-01-31 Yangyang Liu , Shoubin Li

Text-to-image multimodal tasks, generating/retrieving an image from a given text description, are extremely challenging tasks since raw text descriptions cover quite limited information in order to fully describe visually realistic images.…

Computer Vision and Pattern Recognition · Computer Science 2020-10-27 Soyeon Caren Han , Siqu Long , Siwen Luo , Kunze Wang , Josiah Poon