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Extracting structured information from unstructured text is critical for many downstream NLP applications and is traditionally achieved by closed information extraction (cIE). However, existing approaches for cIE suffer from two…

Computation and Language · Computer Science 2024-04-22 Nacime Bouziani , Shubhi Tyagi , Joseph Fisher , Jens Lehmann , Andrea Pierleoni

Information Retrieval (IR) is an important application area of Natural Language Processing (NLP) where one encounters the genuine challenge of processing large quantities of unrestricted natural language text. While much effort has been…

cmp-lg · Computer Science 2008-02-03 Chengxiang Zhai

The challenge of information extraction (IE) lies in the diversity of label schemas and the heterogeneity of structures. Traditional methods require task-specific model design and rely heavily on expensive supervision, making them difficult…

Computation and Language · Computer Science 2023-01-10 Jie Lou , Yaojie Lu , Dai Dai , Wei Jia , Hongyu Lin , Xianpei Han , Le Sun , Hua Wu

Extracting the relevant information out of a large number of documents is a challenging and tedious task. The quality of results generated by the traditionally available full-text search engine and text-based image retrieval systems is not…

Information Retrieval · Computer Science 2022-12-05 Riya Gupta , C. V. Jawahar

Relation extraction (RE) aims to identify the semantic relations between named entities in text. Recent years have witnessed it raised to the document level, which requires complex reasoning with entities and mentions throughout an entire…

Computation and Language · Computer Science 2020-09-23 Difeng Wang , Wei Hu , Ermei Cao , Weijian Sun

Relation extraction (RE) is a well-known NLP application often treated as a sentence- or document-level task. However, a handful of recent efforts explore it across documents or in the cross-document setting (CrossDocRE). This is distinct…

Computation and Language · Computer Science 2024-06-19 Monika Jain , Raghava Mutharaju , Kuldeep Singh , Ramakanth Kavuluru

Deep Learning (DL) is dominating the fields of Natural Language Processing (NLP) and Computer Vision (CV) in the recent times. However, DL commonly relies on the availability of large data annotations, so other alternative or complementary…

Computer Vision and Pattern Recognition · Computer Science 2022-10-10 Roberto Arroyo , Javier Yebes , Elena Martínez , Héctor Corrales , Javier Lorenzo

Artificial Intelligence (AI) has huge impact on our daily lives with applications such as voice assistants, facial recognition, chatbots, autonomously driving cars, etc. Natural Language Processing (NLP) is a cross-discipline of AI and…

Computation and Language · Computer Science 2023-04-18 Klim Zaporojets

Information extraction (IE) from Visually Rich Documents (VRDs) containing layout features along with text is a critical and well-studied task. Specialized non-LLM NLP-based solutions typically involve training models using both textual and…

Information Retrieval · Computer Science 2025-05-21 Aniket Bhattacharyya , Anurag Tripathi , Ujjal Das , Archan Karmakar , Amit Pathak , Maneesh Gupta

The adoption of Deep Neural Networks (DNNs) has greatly benefited Natural Language Processing (NLP) during the past decade. However, the demands of long document analysis are quite different from those of shorter texts, while the ever…

Computation and Language · Computer Science 2024-03-18 Dimitrios Tsirmpas , Ioannis Gkionis , Georgios Th. Papadopoulos , Ioannis Mademlis

The task of Information Extraction (IE) involves automatically converting unstructured textual content into structured data. Most research in this field concentrates on extracting all facts or a specific set of relationships from documents.…

Computation and Language · Computer Science 2024-01-19 Nicolas Gutehrlé , Iana Atanassova

Information Extraction from visual documents enables convenient and intelligent assistance to end users. We present a Neighborhood-based Information Extraction (NIE) approach that uses contextual language models and pays attention to the…

Machine Learning · Computer Science 2021-08-25 Kalpa Gunaratna , Vijay Srinivasan , Sandeep Nama , Hongxia Jin

Extracting key information from documents represents a large portion of business workloads and therefore offers a high potential for efficiency improvements and process automation. With recent advances in Deep Learning, a plethora of Deep…

Information Retrieval · Computer Science 2025-07-21 Alexander Michael Rombach , Peter Fettke

Information extraction (IE) from documents is an intensive area of research with a large set of industrial applications. Current state-of-the-art methods focus on scanned documents with approaches combining computer vision, natural language…

Computation and Language · Computer Science 2022-08-16 Ismail Oussaid , William Vanhuffel , Pirashanth Ratnamogan , Mhamed Hajaiej , Alexis Mathey , Thomas Gilles

As an essential task for the architecture, engineering, and construction (AEC) industry, information retrieval (IR) from unstructured textual data based on natural language processing (NLP) is gaining increasing attention. Although various…

Computation and Language · Computer Science 2022-06-22 Zhe Zheng , Xin-Zheng Lu , Ke-Yin Chen , Yu-Cheng Zhou , Jia-Rui Lin

Information extraction (IE) from unstructured documents remains a critical challenge in data processing pipelines. Traditional optical character recognition (OCR) methods and conventional parsing engines demonstrate limited effectiveness…

Computer Vision and Pattern Recognition · Computer Science 2025-07-28 Aditya Parikh

With the rapid development of information technology, online platforms have produced enormous text resources. As a particular form of Information Extraction (IE), Event Extraction (EE) has gained increasing popularity due to its ability to…

Computation and Language · Computer Science 2021-11-08 Jiangwei Liu , Liangyu Min , Xiaohong Huang

Cross-document relation extraction (RE) aims to identify relations between the head and tail entities located in different documents. Existing approaches typically adopt the paradigm of ``\textit{Small Language Model (SLM) + Classifier}''.…

Computation and Language · Computer Science 2026-04-21 Guoqi Ma , Liang Zhang , Hongyao Tu , Hao Fu , Hui Li , Yujie Lin , Longyue Wang , Weihua Luo , Jinsong Su

Keyphrase extraction aims at automatically extracting a list of "important" phrases representing the key concepts in a document. Prior approaches for unsupervised keyphrase extraction resorted to heuristic notions of phrase importance via…

Computation and Language · Computer Science 2023-02-20 Rishabh Joshi , Vidhisha Balachandran , Emily Saldanha , Maria Glenski , Svitlana Volkova , Yulia Tsvetkov

Information extraction (IE) systems aim to automatically extract structured information, such as named entities, relations between entities, and events, from unstructured texts. While most existing work addresses a particular IE task,…

Computation and Language · Computer Science 2023-05-22 Chang Gao , Wenxuan Zhang , Wai Lam , Lidong Bing