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In this paper, we propose Precision-Informed Semantic Modeling (PRISM), a structured topic modeling framework combining the benefits of rich representations captured by LLMs with the low cost and interpretability of latent semantic…

Machine Learning · Computer Science 2026-04-06 Connor Douglas , Utkucan Balci , Joseph Aylett-Bullock

Topic modeling, a method for extracting the underlying themes from a collection of documents, is an increasingly important component of the design of intelligent systems enabling the sense-making of highly dynamic and diverse streams of…

Information Retrieval · Computer Science 2019-10-07 Chris Gropp , Alexander Herzog , Ilya Safro , Paul W. Wilson , Amy W. Apon

We study the problem of posterior sampling in discrete-state spaces using discrete diffusion models. While posterior sampling methods for continuous diffusion models have achieved remarkable progress, analogous methods for discrete…

Machine Learning · Computer Science 2025-11-04 Wenda Chu , Zihui Wu , Yifan Chen , Yang Song , Yisong Yue

The Gaussian mixture model (GMM) provides a simple yet principled framework for clustering, with properties suitable for statistical inference. In this paper, we propose a new model-based clustering algorithm, called EGMM (evidential GMM),…

Machine Learning · Computer Science 2022-11-29 Lianmeng Jiao , Thierry Denoeux , Zhun-ga Liu , Quan Pan

Modern text retrieval systems often provide a similarity search utility, that allows the user to find efficiently a fixed number k of documents in the data set that are most similar to a given query (here a query is either a simple sequence…

Information Retrieval · Computer Science 2007-06-01 Filippo Geraci , Marco Pellegrini

Evaluating LLMs and text-to-image models is a computationally intensive task often overlooked. Efficient evaluation is crucial for understanding the diverse capabilities of these models and enabling comparisons across a growing number of…

We present a feature vector formation technique for documents - Sparse Composite Document Vector (SCDV) - which overcomes several shortcomings of the current distributional paragraph vector representations that are widely used for text…

Computation and Language · Computer Science 2017-05-15 Dheeraj Mekala , Vivek Gupta , Bhargavi Paranjape , Harish Karnick

Topic models are widely used to discover the latent representation of a set of documents. The two canonical models are latent Dirichlet allocation, and Gaussian latent Dirichlet allocation, where the former uses multinomial distributions…

Machine Learning · Statistics 2023-06-08 Takahiro Yoshida , Ryohei Hisano , Takaaki Ohnishi

Tensor-based multi-view clustering has recently received significant attention due to its exceptional ability to explore cross-view high-order correlations. However, most existing methods still encounter some limitations. (1) Most of them…

Computer Vision and Pattern Recognition · Computer Science 2024-11-13 Deng Xu , Chao Zhang , Zechao Li , Chunlin Chen , Huaxiong Li

This study addresses the issues of semantic entanglement, unclear label structure, and insufficient feature representation in few-shot text classification, and proposes an optimization framework based on structured prompts to enhance…

Computation and Language · Computer Science 2026-03-02 Jiasen Zheng , Zijun Zhou , Huajun Zhang , Junjiang Lin , Jingyun Jia , Qi Wang

Large-scale language models such as GPT-3 are excellent few-shot learners, allowing them to be controlled via natural text prompts. Recent studies report that prompt-based direct classification eliminates the need for fine-tuning but lacks…

Computation and Language · Computer Science 2021-11-19 Kang Min Yoo , Dongju Park , Jaewook Kang , Sang-Woo Lee , Woomyeong Park

Representation of semantic context and local details is the essential issue for building modern semantic segmentation models. However, the interrelationship between semantic context and local details is not well explored in previous works.…

Computer Vision and Pattern Recognition · Computer Science 2021-05-26 Chen Shi , Xiangtai Li , Yanran Wu , Yunhai Tong , Yi Xu

In this paper, an improved clustering technique for large textual datasets by leveraging fine-tuned word embeddings is presented. WEClustering technique is used as the base model. WEClustering model is fur-ther improvements incorporating…

Machine Learning · Computer Science 2025-05-22 Vijay Kumar Sutrakar , Nikhil Mogre

Fine-grained cross-modal alignment aims to establish precise local correspondences between vision and language, forming a cornerstone for visual question answering and related multimodal applications. Current approaches face challenges in…

Computer Vision and Pattern Recognition · Computer Science 2025-11-04 Xinyu Mao , Junsi Li , Haoji Zhang , Yu Liang , Ming Sun

An essential part of monitoring machine learning models in production is measuring input and output data drift. In this paper, we present a system for measuring distributional shifts in natural language data and highlight and investigate…

Computation and Language · Computer Science 2023-12-06 Gyandev Gupta , Bashir Rastegarpanah , Amalendu Iyer , Joshua Rubin , Krishnaram Kenthapadi

We consider the semi-supervised clustering problem where crowdsourcing provides noisy information about the pairwise comparisons on a small subset of data, i.e., whether a sample pair is in the same cluster. We propose a new approach that…

Machine Learning · Statistics 2018-10-30 Yucen Luo , Tian Tian , Jiaxin Shi , Jun Zhu , Bo Zhang

Efficient representation of text documents is an important building block in many NLP tasks. Research on long text categorization has shown that simple weighted averaging of word vectors for sentence representation often outperforms more…

Computation and Language · Computer Science 2019-11-20 Vivek Gupta , Ankit Saw , Pegah Nokhiz , Harshit Gupta , Partha Talukdar

This paper describes the system proposed for the SemEval-2020 Task 1: Unsupervised Lexical Semantic Change Detection. We focused our approach on the detection problem. Given the semantics of words captured by temporal word embeddings in…

Computation and Language · Computer Science 2020-05-21 Pierluigi Cassotti , Annalina Caputo , Marco Polignano , Pierpaolo Basile

Short text is becoming more and more popular on the web, such as Chat Message, SMS and Product Reviews. Accurately classifying short text is an important and challenging task. A number of studies have difficulties in addressing this problem…

Computation and Language · Computer Science 2021-03-02 Mingchen Li , Gabtone. Clinton , Yijia Miao , Feng Gao

Extractive summarization aims to form a summary by directly extracting sentences from the source document. Existing works mostly formulate it as a sequence labeling problem by making individual sentence label predictions. This paper…

Computation and Language · Computer Science 2023-05-12 Haopeng Zhang , Xiao Liu , Jiawei Zhang
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