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Latent Semantic Analysis (LSA) is a well known method for information retrieval. It has also been applied as a model of cognitive processing and word-meaning acquisition. This dual importance of LSA derives from its capacity to modulate the…

Information Retrieval · Computer Science 2007-05-23 Juan C. Valle-Lisboa , Eduardo Mizraji

The training of topic models for a multilingual environment is a challenging task, requiring the use of sophisticated algorithms, topic-aligned corpora, and manual evaluation. These difficulties are further exacerbated when the developer…

Computation and Language · Computer Science 2025-09-03 Felix Engl , Andreas Henrich

Large language models (LLMs) represent words through contextual word embeddings encoding different language properties like semantics and syntax. Understanding these properties is crucial, especially for researchers investigating language…

Computation and Language · Computer Science 2025-04-16 Rita Sevastjanova , Robin Gerling , Thilo Spinner , Mennatallah El-Assady

Traditionally, Latent Dirichlet Allocation (LDA) ingests words in a collection of documents to discover their latent topics using word-document co-occurrences. However, it is unclear how to achieve the best results for languages without…

Computation and Language · Computer Science 2021-08-25 Jin Cheevaprawatdomrong , Alexandra Schofield , Attapol T. Rutherford

Text embeddings are a fundamental component in many NLP tasks, including classification, regression, clustering, and semantic search. However, despite their ubiquitous application, challenges persist in interpreting embeddings and…

Computation and Language · Computer Science 2025-10-03 Juri Opitz , Lucas Möller , Andrianos Michail , Sebastian Padó , Simon Clematide

Social network analysis (SNA), which is a research field describing and modeling the social connection of a certain group of people, is popular among network services. Our topic words analysis project is a SNA method to visualize the topic…

Social and Information Networks · Computer Science 2014-05-16 Xi Qiu , Christopher Stewart

Scaling up robot learning is hindered by the scarcity of robotic demonstrations, whereas human videos offer a vast, untapped source of interaction data. However, bridging the embodiment gap between human hands and robot arms remains a…

Robotics · Computer Science 2026-04-14 Yifu Xu , Bokai Lin , Xinyu Zhan , Hongjie Fang , Yong-Lu Li , Cewu Lu , Lixin Yang

Latent Dirichlet allocation (LDA) is a popular topic modeling technique in academia but less so in industry, especially in large-scale applications involving search engine and online advertising systems. A main underlying reason is that the…

Information Retrieval · Computer Science 2015-12-08 Yi Wang , Xuemin Zhao , Zhenlong Sun , Hao Yan , Lifeng Wang , Zhihui Jin , Liubin Wang , Yang Gao , Ching Law , Jia Zeng

Recent advancements in deep learning techniques have transformed the area of semantic text matching. However, most state-of-the-art models are designed to operate with short documents such as tweets, user reviews, comments, etc. These…

Information Retrieval · Computer Science 2022-06-03 Akshita Jha , Vineeth Rakesh , Jaideep Chandrashekar , Adithya Samavedhi , Chandan K. Reddy

Supervised topic models simultaneously model the latent topic structure of large collections of documents and a response variable associated with each document. Existing inference methods are based on variational approximation or Monte…

Machine Learning · Computer Science 2016-02-22 Yong Ren , Yining Wang , Jun Zhu

This study introduces a simple yet effective method for identifying similar data points across non-free text domains, such as tabular and image data, using Large Language Models (LLMs). Our two-step approach involves data point…

Computation and Language · Computer Science 2024-10-01 Xianlong Zeng , Yijing Gao , Fanghao Song , Ang Liu

The world is facing a multitude of challenges that hinder the development of human civilization and the well-being of humanity on the planet. The Sustainable Development Goals (SDGs) were formulated by the United Nations in 2015 to address…

Computation and Language · Computer Science 2025-06-09 Francesco Invernici , Francesca Curati , Jelena Jakimov , Amirhossein Samavi , Anna Bernasconi

The main goal of this research is to produce a useful software for United Nations (UN), that could help to speed up the process of qualifying the UN documents following the Sustainable Development Goals (SDGs) in order to monitor the…

Information Retrieval · Computer Science 2021-09-14 Francesco Sovrano , Monica Palmirani , Fabio Vitali

Determining dense semantic correspondences across objects and scenes is a difficult problem that underpins many higher-level computer vision algorithms. Unlike canonical dense correspondence problems which consider images that are spatially…

Computer Vision and Pattern Recognition · Computer Science 2015-05-18 Hilton Bristow , Jack Valmadre , Simon Lucey

This paper presents a novel research problem on joint discovery of commonalities and differences between two individual documents (or document sets), called Comparative Document Analysis (CDA). Given any pair of documents from a document…

Information Retrieval · Computer Science 2015-10-27 Xiang Ren , Yuanhua Lv , Kuansan Wang , Jiawei Han

Word embeddings are a basic building block of modern NLP pipelines. Efforts have been made to learn rich, efficient, and interpretable embeddings for large generic datasets available in the public domain. However, these embeddings have…

Computation and Language · Computer Science 2021-03-23 Rishabh Gupta , Rajesh N Rao

Recently, many studies have demonstrated that exclusively incorporating OCR-derived text and spatial layouts with large language models (LLMs) can be highly effective for document understanding tasks. However, existing methods that…

Computation and Language · Computer Science 2025-05-20 Jinghui Lu , Haiyang Yu , Yanjie Wang , Yongjie Ye , Jingqun Tang , Ziwei Yang , Binghong Wu , Qi Liu , Hao Feng , Han Wang , Hao Liu , Can Huang

Developing efficient and scalable algorithms for Latent Dirichlet Allocation (LDA) is of wide interest for many applications. Previous work has developed an O(1) Metropolis-Hastings sampling method for each token. However, the performance…

Machine Learning · Statistics 2016-03-03 Jianfei Chen , Kaiwei Li , Jun Zhu , Wenguang Chen

Semi-supervised domain adaptation (SSDA) adapts a learner to a new domain by effectively utilizing source domain data and a few labeled target samples. It is a practical yet under-investigated research topic. In this paper, we analyze the…

Computer Vision and Pattern Recognition · Computer Science 2023-03-31 Wenqiao Zhang , Changshuo Liu , Can Cui , Beng Chin Ooi

Recent methods that integrate spatial layouts with text for document understanding in large language models (LLMs) have shown promising results. A commonly used method is to represent layout information as text tokens and interleave them…

Computer Vision and Pattern Recognition · Computer Science 2025-03-25 Zhaoqing Zhu , Chuwei Luo , Zirui Shao , Feiyu Gao , Hangdi Xing , Qi Zheng , Ji Zhang