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Information extraction from semi-structured webpages provides valuable long-tailed facts for augmenting knowledge graph. Relational Web tables are a critical component containing additional entities and attributes of rich and diverse…

Information Retrieval · Computer Science 2021-02-19 Daheng Wang , Prashant Shiralkar , Colin Lockard , Binxuan Huang , Xin Luna Dong , Meng Jiang

Tabular data are ubiquitous for the widespread applications of tables and hence have attracted the attention of researchers to extract underlying information. One of the critical problems in mining tabular data is how to understand their…

Machine Learning · Computer Science 2021-06-17 Lun Du , Fei Gao , Xu Chen , Ran Jia , Junshan Wang , Jiang Zhang , Shi Han , Dongmei Zhang

Table structure recognition (TSR) aims at extracting tables in images into machine-understandable formats. Recent methods solve this problem by predicting the adjacency relations of detected cell boxes or learning to directly generate the…

Computer Vision and Pattern Recognition · Computer Science 2024-01-04 Rujiao Long , Hangdi Xing , Zhibo Yang , Qi Zheng , Zhi Yu , Cong Yao , Fei Huang

Table structure recognition (TSR) requires both table-level coherence (row/column counts, headers, spanning cells) and precise separator localization. We introduce FastTab, a grid-centric TSR model that avoids autoregressive HTML decoding…

Computer Vision and Pattern Recognition · Computer Science 2026-05-22 Laziz Hamdi , Amine Tamasna , Pascal Boisson , Thierry Paquet

Table Structure Recognition is an essential part of end-to-end tabular data extraction in document images. The recent success of deep learning model architectures in computer vision remains to be non-reflective in table structure…

Computer Vision and Pattern Recognition · Computer Science 2021-05-18 Umar Khan , Sohaib Zahid , Muhammad Asad Ali , Adnan ul Hassan , Faisal Shafait

We present a new table structure recognition (TSR) approach, called TSRFormer, to robustly recognizing the structures of complex tables with geometrical distortions from various table images. Unlike previous methods, we formulate table…

Computer Vision and Pattern Recognition · Computer Science 2023-07-13 Jiawei Wang , Weihong Lin , Chixiang Ma , Mingze Li , Zheng Sun , Lei Sun , Qiang Huo

We present a new table structure recognition (TSR) approach, called TSRFormer, to robustly recognizing the structures of complex tables with geometrical distortions from various table images. Unlike previous methods, we formulate table…

Computer Vision and Pattern Recognition · Computer Science 2022-08-10 Weihong Lin , Zheng Sun , Chixiang Ma , Mingze Li , Jiawei Wang , Lei Sun , Qiang Huo

As global trends are shifting towards data-driven industries, the demand for automated algorithms that can convert digital images of scanned documents into machine readable information is rapidly growing. Besides the opportunity of data…

Computer Vision and Pattern Recognition · Computer Science 2021-05-25 Pascal Fischer , Alen Smajic , Alexander Mehler , Giuseppe Abrami

Tables present summarized and structured information to the reader, which makes table structure extraction an important part of document understanding applications. However, table structure identification is a hard problem not only because…

Computer Vision and Pattern Recognition · Computer Science 2020-02-07 Saqib Ali Khan , Syed Muhammad Daniyal Khalid , Muhammad Ali Shahzad , Faisal Shafait

Tabular documents such as CSV and Excel files are widely used in enterprise data pipelines, yet existing chunking strategies for retrieval-augmented generation (RAG) are primarily designed for unstructured text and do not account for…

Computation and Language · Computer Science 2026-05-04 Pooja Guttal , Varun Magotra , Vasudeva Mahavishnu , Natasha Chanto , Sidharth Sivaprasad , Manas Gaur

An automatic table recognition method for interpretation of tabular data in document images majorly involves solving two problems of table detection and table structure recognition. The prior work involved solving both problems…

Computer Vision and Pattern Recognition · Computer Science 2020-05-29 Devashish Prasad , Ayan Gadpal , Kshitij Kapadni , Manish Visave , Kavita Sultanpure

With the widespread use of mobile phones and scanners to photograph and upload documents, the need for extracting the information trapped in unstructured document images such as retail receipts, insurance claim forms and financial invoices…

Computer Vision and Pattern Recognition · Computer Science 2020-01-07 Shubham Paliwal , Vishwanath D , Rohit Rahul , Monika Sharma , Lovekesh Vig

Table Structure Recognition (TSR) is vital for various downstream tasks like information retrieval, table reconstruction, and document understanding. While most state-of-the-art (SOTA) research predominantly focuses on TSR in English…

Computer Vision and Pattern Recognition · Computer Science 2025-03-18 Dhruv Kudale , Badri Vishal Kasuba , Venkatapathy Subramanian , Parag Chaudhuri , Ganesh Ramakrishnan

A table is an object that captures structured and informative content within a document, and recognizing a table in an image is challenging due to the complexity and variety of table layouts. Many previous works typically adopt a two-stage…

Computer Vision and Pattern Recognition · Computer Science 2023-05-02 Youngmin Baek , Daehyun Nam , Jaeheung Surh , Seung Shin , Seonghyeon Kim

The first phase of table recognition is to detect the tabular area in a document. Subsequently, the tabular structures are recognized in the second phase in order to extract information from the respective cells. Table detection and…

Computer Vision and Pattern Recognition · Computer Science 2021-05-11 Khurram Azeem Hashmi , Marcus Liwicki , Didier Stricker , Muhammad Adnan Afzal , Muhammad Ahtsham Afzal , Muhammad Zeshan Afzal

Document structure analysis, such as zone segmentation and table recognition, is a complex problem in document processing and is an active area of research. The recent success of deep learning in solving various computer vision and machine…

Computer Vision and Pattern Recognition · Computer Science 2019-07-04 Shah Rukh Qasim , Hassan Mahmood , Faisal Shafait

We present a novel deep-learning-based method to cluster words in documents which we apply to detect and recognize tables given the OCR output. We interpret table structure bottom-up as a graph of relations between pairs of words (belonging…

Machine Learning · Computer Science 2024-05-24 Marek Polewczyk , Marco Spinaci

Table Retrieval (TR) has traditionally been formulated as an ad-hoc retrieval problem, where relevance is primarily determined by topical semantic similarity. With the growing adoption of LLM-based agentic systems, access to structured data…

Information Retrieval · Computer Science 2026-05-04 Rihui Jin , Yuchen Lu , Ting Zhang , Jun Wang , Kuicai Dong , Zhaocheng Du , Dongping Liu , Gang Wang , Yong Liu , Guilin Qi

A large amount of information is stored in data tables. Users can search for data tables using a keyword-based query. A table is composed primarily of data values that are organized in rows and columns providing implicit structural…

Information Retrieval · Computer Science 2022-03-29 Mohamed Trabelsi , Zhiyu Chen , Shuo Zhang , Brian D. Davison , Jeff Heflin

This work presents a novel approach to tabular data prediction leveraging graph structure learning and graph neural networks. Despite the prevalence of tabular data in real-world applications, traditional deep learning methods often…

Machine Learning · Computer Science 2023-05-26 Jay Chiehen Liao , Cheng-Te Li