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In this paper we present a model for unsupervised topic discovery in texts corpora. The proposed model uses documents, words, and topics lookup table embedding as neural network model parameters to build probabilities of words given topics,…

Computation and Language · Computer Science 2019-11-26 Sileye 0. Ba

We introduce TableLLM, a robust large language model (LLM) with 8 billion parameters, purpose-built for proficiently handling tabular data manipulation tasks, whether they are embedded within documents or spreadsheets, catering to…

Computation and Language · Computer Science 2025-02-18 Xiaokang Zhang , Sijia Luo , Bohan Zhang , Zeyao Ma , Jing Zhang , Yang Li , Guanlin Li , Zijun Yao , Kangli Xu , Jinchang Zhou , Daniel Zhang-Li , Jifan Yu , Shu Zhao , Juanzi Li , Jie Tang

Large language models record impressive performance on many natural language processing tasks. However, their knowledge capacity is limited to the pretraining corpus. Retrieval augmentation offers an effective solution by retrieving context…

Computation and Language · Computer Science 2023-11-22 Sai Munikoti , Anurag Acharya , Sridevi Wagle , Sameera Horawalavithana

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

The global pandemic has made it more important than ever to quickly and accurately retrieve relevant scientific literature for effective consumption by researchers in a wide range of fields. We provide an analysis of several multi-label…

Information Retrieval · Computer Science 2020-09-11 Bernal Jiménez Gutiérrez , Juncheng Zeng , Dongdong Zhang , Ping Zhang , Yu Su

Keyphrase extraction is the task of extracting a small set of phrases that best describe a document. Most existing benchmark datasets for the task typically have limited numbers of annotated documents, making it challenging to train…

Computation and Language · Computer Science 2020-10-26 Tuan Manh Lai , Trung Bui , Doo Soon Kim , Quan Hung Tran

It is the most important way for researchers to acquire academic progress via reading scientific papers, most of which are in PDF format. However, existing PDF Readers like Adobe Acrobat Reader and Foxit PDF Reader are usually only for…

Digital Libraries · Computer Science 2022-06-22 Sheng-Fu Wang , Shu-Hang Liu , Tian-Yi Che , Yi-Fan Lu , Song-Xiao Yang , Heyan Huang , Xian-Ling Mao

This paper presents the novel approach towards table structure recognition by leveraging the guided anchors. The concept differs from current state-of-the-art approaches for table structure recognition that naively apply object detection…

Computer Vision and Pattern Recognition · Computer Science 2021-04-22 Khurram Azeem Hashmi , Didier Stricker , Marcus Liwicki , Muhammad Noman Afzal , Muhammad Zeshan Afzal

Document retrieval has been an important research problem over many years in the information retrieval community. State-of-the-art techniques utilize various methods in matching documents to a given document including keywords, phrases, and…

Information Retrieval · Computer Science 2016-04-21 Kalpa Gunaratna

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

The Document Set Expansion (DSE) task involves identifying relevant documents from large collections based on a limited set of example documents. Previous research has highlighted Positive and Unlabeled (PU) learning as a promising approach…

Information Retrieval · Computer Science 2024-03-27 Haiyang Zhang , Qiuyi Chen , Yuanjie Zou , Yushan Pan , Jia Wang , Mark Stevenson

Patent prior-art retrieval becomes especially challenging when relevant disclosures cross technological boundaries. Existing benchmarks lack explicit domain partitions, making it difficult to assess how retrieval systems cope with such…

Computation and Language · Computer Science 2026-03-03 Iliass Ayaou , Denis Cavallucci , Hicham Chibane

Document layout understanding remains data-intensive despite advances in semi-supervised learning. We present a framework that enhances semi-supervised detection by fusing visual predictions with structural priors from text-pretrained LLMs…

Computer Vision and Pattern Recognition · Computer Science 2025-11-14 Ibne Farabi Shihab , Sanjeda Akter , Anuj Sharma

Retrieval-Augmented Generation (RAG) systems depend critically on the quality of document preprocessing, yet no prior study has evaluated PDF processing frameworks by their impact on downstream question-answering accuracy. We address this…

Conventional document layout analysis (DLA) traditionally depends on empirical priors or a fixed set of learnable queries executed in a single forward pass. While sufficient for early-generation documents with a small, predetermined number…

Computer Vision and Pattern Recognition · Computer Science 2025-11-26 Yufan Chen , Omar Moured , Ruiping Liu , Junwei Zheng , Kunyu Peng , Jiaming Zhang , Rainer Stiefelhagen

Information extraction from handwritten documents involves traditionally three distinct steps: Document Layout Analysis, Handwritten Text Recognition, and Named Entity Recognition. Recent approaches have attempted to integrate these steps…

Artificial Intelligence · Computer Science 2026-02-03 Thomas Constum , Pierrick Tranouez , Thierry Paquet

Since a vast number of tables can be easily collected from web pages, spreadsheets, PDFs, and various other document types, a flurry of table pre-training frameworks have been proposed following the success of text and images, and they have…

Computation and Language · Computer Science 2022-05-02 Haoyu Dong , Zhoujun Cheng , Xinyi He , Mengyu Zhou , Anda Zhou , Fan Zhou , Ao Liu , Shi Han , Dongmei Zhang

Large Language Models (LLMs) trained on large volumes of data excel at various natural language tasks, but they cannot handle tasks requiring knowledge that has not been trained on previously. One solution is to use a retriever that fetches…

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

Social scientists often classify text documents to use the resulting labels as an outcome or a predictor in empirical research. Automated text classification has become a standard tool, since it requires less human coding. However, scholars…

Computation and Language · Computer Science 2025-05-14 Mitchell Bosley , Saki Kuzushima , Ted Enamorado , Yuki Shiraito