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Document layout analysis aims to detect and categorize structural elements (e.g., titles, tables, figures) in scanned or digital documents. Popular methods often rely on high-quality Optical Character Recognition (OCR) to merge visual…

Computer Vision and Pattern Recognition · Computer Science 2026-01-13 Fuyuan Liu , Dianyu Yu , He Ren , Nayu Liu , Xiaomian Kang , Delai Qiu , Fa Zhang , Genpeng Zhen , Shengping Liu , Jiaen Liang , Wei Huang , Yining Wang , Junnan Zhu

Text semantic segmentation involves partitioning a document into multiple paragraphs with continuous semantics based on the subject matter, contextual information, and document structure. Traditional approaches have typically relied on…

Computation and Language · Computer Science 2025-04-03 Tongke Ni , Yang Fan , Junru Zhou , Xiangping Wu , Qingcai Chen

Document parsing (DP) transforms unstructured or semi-structured documents into structured, machine-readable representations, enabling downstream applications such as knowledge base construction and retrieval-augmented generation (RAG).…

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

Integrating various data modalities brings valuable insights into underlying phenomena. Multimodal factor analysis (FA) uncovers shared axes of variation underlying different simple data modalities, where each sample is represented by a…

Machine Learning · Computer Science 2025-04-29 Małgorzata Łazęcka , Ewa Szczurek

The triple-based knowledge in large-scale knowledge bases is most likely lacking in structural logic and problematic of conducting knowledge hierarchy. In this paper, we introduce the concept of metaknowledge to knowledge engineering…

Computer Vision and Pattern Recognition · Computer Science 2021-02-08 Shukan Liu , Ruilin Xu , Boying Geng , Qiao Sun , Li Duan , Yiming Liu

Automatic, template-free extraction of information from form images is challenging due to the variety of form layouts. This is even more challenging for historical forms due to noise and degradation. A crucial part of the extraction process…

Computer Vision and Pattern Recognition · Computer Science 2019-09-20 Brian Davis , Bryan Morse , Scott Cohen , Brian Price , Chris Tensmeyer

Retrieval-augmented generation (RAG) for document-based Open-domain Question Answering (ODQA) on large-scale industrial corpora faces two critical bottlenecks: routing failure in locating the correct document and evidence fragmentation in…

Artificial Intelligence · Computer Science 2026-05-29 Joongmin Shin , Gyuho Shim , Jeongbae Park , Jaehyung Seo , Heuiseok Lim

A graph theoretic approach is proposed for object shape representation in a hierarchical compositional architecture called Compositional Hierarchy of Parts (CHOP). In the proposed approach, vocabulary learning is performed using a hybrid…

Computer Vision and Pattern Recognition · Computer Science 2015-01-26 Umit Rusen Aktas , Mete Ozay , Ales Leonardis , Jeremy L. Wyatt

Hierarchical classification is significant for complex tasks by providing multi-granular predictions and encouraging better mistakes. As the label structure decides its performance, many existing approaches attempt to construct an excellent…

Computer Vision and Pattern Recognition · Computer Science 2021-07-05 Xiaoni Li , Yucan Zhou , Yu Zhou , Weiping Wang

In current practice a formal analysis of hybrid system models is assertion-based. The work presented here is based on features that look beyond functional correctness toward a quantitative evaluation of behavioral attributes. A feature…

Logic in Computer Science · Computer Science 2019-02-25 Antonio Anastasio Bruto da Costa , Goran Frehse , Pallab Dasgupta

Recent advances in large language models enable documents to be represented as dense semantic embeddings, supporting similarity-based operations over large text collections. However, many web-scale systems still rely on flat clustering or…

Computation and Language · Computer Science 2026-01-30 Thomas Haschka , Joseph Bakarji

Procedures are an important knowledge component of documents that can be leveraged by cognitive assistants for automation, question-answering or driving a conversation. It is a challenging problem to parse big dense documents like product…

Artificial Intelligence · Computer Science 2020-10-21 Shivali Agarwal , Shubham Atreja , Vikas Agarwal

Nowadays, information management systems deal with data originating from different sources including relational databases, NoSQL data stores, and Web data formats, varying not only in terms of data formats, but also in the underlying data…

Databases · Computer Science 2012-11-08 Michael Hausenblas , Boris Villazon-Terrazas , Richard Cyganiak

With the rapid progression of deep learning technologies, multi-modality image fusion has become increasingly prevalent in object detection tasks. Despite its popularity, the inherent disparities in how different sources depict scene…

Computer Vision and Pattern Recognition · Computer Science 2024-01-02 Xingyuan Li , Yang Zou , Jinyuan Liu , Zhiying Jiang , Long Ma , Xin Fan , Risheng Liu

Multimodal affective computing, learning to recognize and interpret human affects and subjective information from multiple data sources, is still challenging because: (i) it is hard to extract informative features to represent human affects…

Computation and Language · Computer Science 2018-05-23 Yue Gu , Kangning Yang , Shiyu Fu , Shuhong Chen , Xinyu Li , Ivan Marsic

Transcribing structured data into natural language descriptions has emerged as a challenging task, referred to as "data-to-text". These structures generally regroup multiple elements, as well as their attributes. Most attempts rely on…

Computation and Language · Computer Science 2019-12-23 Clément Rebuffel , Laure Soulier , Geoffrey Scoutheeten , Patrick Gallinari

We propose a novel method for code summarization utilizing Heterogeneous Code Representations (HCRs) and our specially designed HierarchyNet. HCRs effectively capture essential code features at lexical, syntactic, and semantic levels by…

Software Engineering · Computer Science 2023-05-10 Minh Huynh Nguyen , Nghi D. Q. Bui , Truong Son Hy , Long Tran-Thanh , Tien N. Nguyen

In real-world scenarios, many data processing problems often involve heterogeneous images associated with different imaging modalities. Since these multimodal images originate from the same phenomenon, it is realistic to assume that they…

Computer Vision and Pattern Recognition · Computer Science 2021-03-11 Pingfan Song , Miguel R. D. Rodrigues

In document-level relation extraction (DocRE), graph structure is generally used to encode relation information in the input document to classify the relation category between each entity pair, and has greatly advanced the DocRE task over…

Computation and Language · Computer Science 2020-12-22 Wang Xu , Kehai Chen , Tiejun Zhao