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This paper proposes a new methodology to study sequential corpora by implementing a two-stage algorithm that learns time-based topics with respect to a scale of document positions and introduces the concept of Topic Scaling which ranks…

Information Retrieval · Computer Science 2021-04-05 Sami Diaf , Ulrich Fritsche

We present a framework for large-scale sentiment and topic analysis of Twitter discourse. Our pipeline begins with targeted data collection using conflict-specific keywords, followed by automated sentiment labeling via multiple pre-trained…

Computation and Language · Computer Science 2025-05-06 Yiwen Lu , Siheng Xiong , Zhaowei Li

We present a joint modeling approach to identify salient discussion points in spoken meetings as well as to label the discourse relations between speaker turns. A variation of our model is also discussed when discourse relations are treated…

Computation and Language · Computer Science 2017-05-16 Kechen Qin , Lu Wang , Joseph Kim

The rapid expansion of biomedical publications creates challenges for organizing knowledge and detecting emerging trends, underscoring the need for scalable and interpretable methods. Common clustering and topic modeling approaches such as…

Machine Learning · Computer Science 2026-02-25 Lana E. Yeganova , Won G. Kim , Shubo Tian , Natalie Xie , Donald C. Comeau , W. John Wilbur , Zhiyong Lu

We describe the use of Non-Negative Matrix Factorization (NMF) and Latent Dirichlet Allocation (LDA) algorithms to perform topic mining and labelling applied to retail customer communications in attempt to characterize the subject of…

Machine Learning · Computer Science 2019-12-20 Rashid Mehdiyev , Jean Nava , Karan Sodhi , Saurav Acharya , Annie Ibrahim Rana

The task of discovering topics in text corpora has been dominated by Latent Dirichlet Allocation and other Topic Models for over a decade. In order to apply these approaches to massive text corpora, the vocabulary needs to be reduced…

Computation and Language · Computer Science 2019-08-08 Gibran Fuentes-Pineda , Ivan Vladimir Meza-Ruiz

We look at the long-standing problem of segmenting unlabeled speech into word-like segments and clustering these into a lexicon. Several previous methods use a scoring model coupled with dynamic programming to find an optimal segmentation.…

Audio and Speech Processing · Electrical Eng. & Systems 2025-01-14 Simon Malan , Benjamin van Niekerk , Herman Kamper

Latent Dirichlet allocation (LDA) is an important hierarchical Bayesian model for probabilistic topic modeling, which attracts worldwide interests and touches on many important applications in text mining, computer vision and computational…

Machine Learning · Computer Science 2015-03-19 Jia Zeng , William K. Cheung , Jiming Liu

In this paper, we explore Latent Dirichlet Allocation (LDA) and Polylingual Latent Dirichlet Allocation (PolyLDA), as a means to discover trending styles in Overstock from deep visual semantic features transferred from a pretrained…

Computer Vision and Pattern Recognition · Computer Science 2018-04-25 Murium Iqbal , Adair Kovac , Kamelia Aryafar

Much of information sits in an unprecedented amount of text data. Managing allocation of these large scale text data is an important problem for many areas. Topic modeling performs well in this problem. The traditional generative models…

Machine Learning · Computer Science 2015-11-30 Guorui Zhou , Guang Chen

In this paper, we provide the first practical algorithms with provable guarantees for the problem of inferring the topics assigned to each document in an LDA topic model. This is the primary inference problem for many applications of topic…

Machine Learning · Computer Science 2025-06-10 Adam Breuer

In dialogue systems, discourse plays a crucial role in managing conversational focus and coordinating interactions. It consists of two key structures: rhetorical structure and topic structure. The former captures the logical flow of…

Computation and Language · Computer Science 2025-02-25 Jiahui Xu , Feng Jiang , Anningzhe Gao , Luis Fernando D'Haro , Haizhou Li

Traditional topic models such as Latent Dirichlet Allocation (LDA) have been widely used to uncover latent structures in text corpora, but they often struggle to integrate auxiliary information such as metadata, user attributes, or document…

Machine Learning · Computer Science 2025-11-04 Biyi Fang , Truong Vo , Kripa Rajshekhar , Diego Klabjan

Software repositories contain large amounts of textual data, ranging from source code comments and issue descriptions to questions, answers, and comments on Stack Overflow. To make sense of this textual data, topic modelling is frequently…

Computation and Language · Computer Science 2019-03-12 Christoph Treude , Markus Wagner

In the retrieval-based multi-turn dialogue modeling, it remains a challenge to select the most appropriate response according to extracting salient features in context utterances. As a conversation goes on, topic shift at discourse-level…

Computation and Language · Computer Science 2020-12-18 Yi Xu , Hai Zhao , Zhuosheng Zhang

The tremendous growth of social media content on the Internet has inspired the development of the text analytics to understand and solve real-life problems. Leveraging statistical topic modelling helps researchers and practitioners in…

Social and Information Networks · Computer Science 2016-08-09 Marina Sokolova , Kanyi Huang , Stan Matwin , Joshua Ramisch , Vera Sazonova , Renee Black , Chris Orwa , Sidney Ochieng , Nanjira Sambuli

Financial news items are unstructured sources of information that can be mined to extract knowledge for market screening applications. Manual extraction of relevant information from the continuous stream of finance-related news is…

Supervised topic models can help clinical researchers find interpretable cooccurence patterns in count data that are relevant for diagnostics. However, standard formulations of supervised Latent Dirichlet Allocation have two problems.…

Machine Learning · Statistics 2016-12-07 Michael C. Hughes , Huseyin Melih Elibol , Thomas McCoy , Roy Perlis , Finale Doshi-Velez

Understanding patient feedback is crucial for improving healthcare services, yet analyzing unlabeled short-text feedback presents challenges due to limited data and domain-specific nuances. Traditional supervised approaches require…

Machine Learning · Computer Science 2026-01-21 K M Sajjadul Islam , Ravi Teja Karri , Srujan Vegesna , Jiawei Wu , Praveen Madiraju

In this work, we propose an approach for detecting conversation groups in social scenarios like cocktail parties and networking events, from overhead camera recordings. We posit the detection of conversation groups as a learning problem…

Computer Vision and Pattern Recognition · Computer Science 2022-06-07 Stephanie Tan , David M. J. Tax , Hayley Hung
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