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We study a parametric family of latent variable models, namely topic models, equipped with a hierarchical structure among the topic variables. Such models may be viewed as a finite mixture of the latent Dirichlet allocation (LDA) induced…

Statistics Theory · Mathematics 2024-08-27 Sunrit Chakraborty , Rayleigh Lei , XuanLong Nguyen

Topic modeling is a widely used technique for uncovering thematic structures from large text corpora. However, most topic modeling approaches e.g. Latent Dirichlet Allocation (LDA) struggle to capture nuanced semantics and contextual…

Information Retrieval · Computer Science 2024-09-25 Satya Kapoor , Alex Gil , Sreyoshi Bhaduri , Anshul Mittal , Rutu Mulkar

Protecting cloud applications is critical in an era where security threats are increasingly sophisticated and persistent. Continuous Integration and Continuous Deployment (CI/CD) pipelines are particularly vulnerable, making innovative…

Cryptography and Security · Computer Science 2025-10-21 Sabbir M. Saleh , Nazim Madhavji , John Steinbacher

In an effort to develop topic modeling methods that can be quickly applied to large data sets, we revisit the problem of maximum-likelihood estimation in topic models. It is known, at least informally, that maximum-likelihood estimation in…

Machine Learning · Statistics 2026-02-10 Peter Carbonetto , Abhishek Sarkar , Zihao Wang , Matthew Stephens

Safety is the main concern in the aviation industry, where even minor operational issues can lead to serious consequences. This study addresses the need for comprehensive aviation accident analysis by leveraging natural language processing…

Machine Learning · Computer Science 2025-01-23 Aziida Nanyonga , Hassan Wasswa , Graham Wild

Topic modeling is a research field finding increasing applications: historically from document retrieving, to sentiment analysis and text summarization. Large Language Models (LLM) are currently a major trend in text processing, but few…

Artificial Intelligence · Computer Science 2026-02-03 Fabrice Boissier , Monica Sen , Irina Rychkova

The hedge fund industry presents significant challenges for investors due to its opacity and limited disclosure requirements. This pioneering study introduces two major innovations in financial text analysis. First, we apply topic modeling…

Computational Finance · Quantitative Finance 2025-12-09 Chang Liu

The short text has been the prevalent format for information of Internet in recent decades, especially with the development of online social media, whose millions of users generate a vast number of short messages everyday. Although…

Computation and Language · Computer Science 2014-12-18 Yuan Zuo , Jichang Zhao , Ke Xu

Topic modelling, as a well-established unsupervised technique, has found extensive use in automatically detecting significant topics within a corpus of documents. However, classic topic modelling approaches (e.g., LDA) have certain…

Computation and Language · Computer Science 2024-03-27 Yida Mu , Chun Dong , Kalina Bontcheva , Xingyi Song

Vehicle crashes involve complex interactions between road users, split-second decisions, and challenging environmental conditions. Among these, two-vehicle crashes are the most prevalent, accounting for approximately 70% of roadway crashes…

Artificial Intelligence · Computer Science 2025-10-16 Boyou Chen , Gerui Xu , Zifei Wang , Huizhong Guo , Ananna Ahmed , Zhaonan Sun , Zhen Hu , Kaihan Zhang , Shan Bao

Language models are typically applied at the sentence level, without access to the broader document context. We present a neural language model that incorporates document context in the form of a topic model-like architecture, thus…

Computation and Language · Computer Science 2017-10-16 Jey Han Lau , Timothy Baldwin , Trevor Cohn

Although latent factor models (e.g., matrix factorization) obtain good performance in predictions, they suffer from several problems including cold-start, non-transparency, and suboptimal recommendations. In this paper, we employ text with…

Machine Learning · Computer Science 2022-03-03 Biyi Fang , Kripa Rajshekhar , Diego Klabjan

Originally designed to model text, topic modeling has become a powerful tool for uncovering latent structure in domains including medicine, finance, and vision. The goals for the model vary depending on the application: in some cases, the…

Machine Learning · Statistics 2014-11-24 Finale Doshi-Velez , Byron Wallace , Ryan Adams

Crowdfunding in the realm of the Social Web has received substantial attention, with prior research examining various aspects of campaigns, including project objectives, durations, and influential project categories for successful…

Computation and Language · Computer Science 2024-01-09 Prathamesh Muzumdar , George Kurian , Ganga Prasad Basyal

Modeling document structure is of great importance for discourse analysis and related applications. The goal of this research is to capture the document intent structure by modeling documents as a mixture of topic words and rhetorical…

Computation and Language · Computer Science 2015-12-08 Bei Chen , Jun Zhu , Nan Yang , Tian Tian , Ming Zhou , Bo Zhang

Large Language Models (LLMs) have revolutionized conversational AI, yet their robustness in extended multi-turn dialogues remains poorly understood. Existing evaluation frameworks focus on static benchmarks and single-turn assessments,…

Computation and Language · Computer Science 2026-02-05 Yubo Li , Ramayya Krishnan , Rema Padman

Probabilistic topic models are widely used to discover latent topics in document collections, while latent feature vector representations of words have been used to obtain high performance in many NLP tasks. In this paper, we extend two…

Computation and Language · Computer Science 2018-10-16 Dat Quoc Nguyen , Richard Billingsley , Lan Du , Mark Johnson

Inferring topics from the overwhelming amount of short texts becomes a critical but challenging task for many content analysis tasks, such as content charactering, user interest profiling, and emerging topic detecting. Existing methods such…

Computation and Language · Computer Science 2016-09-28 Jipeng Qiang , Ping Chen , Tong Wang , Xindong Wu

Traffic accidents pose a significant threat to public safety, resulting in numerous fatalities, injuries, and a substantial economic burden each year. The development of predictive models capable of real-time forecasting of post-accident…

Machine Learning · Computer Science 2025-11-04 Pouyan Sajadi , Mahya Qorbani , Sobhan Moosavi , Erfan Hassannayebi

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
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