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Latent Dirichlet Allocation (LDA) is a prominent generative probabilistic model used for uncovering abstract topics within document collections. In this paper, we explore the effectiveness of augmenting topic models with Large Language…

计算与语言 · 计算机科学 2025-07-14 Mengze Hong , Chen Jason Zhang , Di Jiang

Topic models, such as latent Dirichlet allocation (LDA), can be useful tools for the statistical analysis of document collections and other discrete data. The LDA model assumes that the words of each document arise from a mixture of topics,…

应用统计 · 统计学 2009-09-29 David M. Blei , John D. Lafferty

Topic modeling is widely studied for the dimension reduction and analysis of documents. However, it is formulated as a difficult optimization problem. Current approximate solutions also suffer from inaccurate model- or data-assumptions. To…

机器学习 · 计算机科学 2019-10-25 Jianyu Wang , Xiao-Lei Zhang

Increasingly many real world tasks involve data in multiple modalities or views. This has motivated the development of many effective algorithms for learning a common latent space to relate multiple domains. However, most existing…

计算机视觉与模式识别 · 计算机科学 2017-11-17 Tanmoy Mukherjee , Makoto Yamada , Timothy M. Hospedales

In this paper, we present hierarchical relationbased latent Dirichlet allocation (hrLDA), a data-driven hierarchical topic model for extracting terminological ontologies from a large number of heterogeneous documents. In contrast to…

计算与语言 · 计算机科学 2020-01-10 Xiaofeng Zhu , Diego Klabjan , Patrick Bless

The focus of this survey is on the analysis of two modalities of multimodal deep learning: image and text. Unlike classic reviews of deep learning where monomodal image classifiers such as VGG, ResNet and Inception module are central…

计算机视觉与模式识别 · 计算机科学 2020-10-19 Wei Chen , Weiping Wang , Li Liu , Michael S. Lew

The problem of topic modeling can be seen as a generalization of the clustering problem, in that it posits that observations are generated due to multiple latent factors (e.g., the words in each document are generated as a mixture of…

机器学习 · 计算机科学 2013-01-21 Animashree Anandkumar , Dean P. Foster , Daniel Hsu , Sham M. Kakade , Yi-Kai Liu

We present LDAExplore, a tool to visualize topic distributions in a given document corpus that are generated using Topic Modeling methods. Latent Dirichlet Allocation (LDA) is one of the basic methods that is predominantly used to generate…

信息检索 · 计算机科学 2015-07-24 Ashwinkumar Ganesan , Kiante Brantley , Shimei Pan , Jian Chen

Latent Dirichlet Allocation (LDA) mining thematic structure of documents plays an important role in nature language processing and machine learning areas. However, the probability distribution from LDA only describes the statistical…

计算与语言 · 计算机科学 2015-06-30 Li-Qiang Niu , Xin-Yu Dai

Recent advancements in autoregressive and diffusion models have led to strong performance in image generation with short scene text words. However, generating coherent, long-form text in images, such as paragraphs in slides or documents,…

计算机视觉与模式识别 · 计算机科学 2025-03-27 Alex Jinpeng Wang , Linjie Li , Zhengyuan Yang , Lijuan Wang , Min Li

In this paper we demonstrate the applicability of latent Dirichlet allocation (LDA) for classifying large Web document collections. One of our main results is a novel influence model that gives a fully generative model of the document…

信息检索 · 计算机科学 2010-06-28 István Bíró , Jácint Szabó

Learning social media data embedding by deep models has attracted extensive research interest as well as boomed a lot of applications, such as link prediction, classification, and cross-modal search. However, for social images which contain…

多媒体 · 计算机科学 2017-10-19 Feiran Huang , Xiaoming Zhang , Zhoujun Li , Tao Mei , Yueying He , Zhonghua Zhao

Recent efforts on training visual navigation agents conditioned on language using deep reinforcement learning have been successful in learning policies for different multimodal tasks, such as semantic goal navigation and embodied question…

机器学习 · 计算机科学 2019-02-05 Devendra Singh Chaplot , Lisa Lee , Ruslan Salakhutdinov , Devi Parikh , Dhruv Batra

We propose a Label Propagation based algorithm for weakly supervised text classification. We construct a graph where each document is represented by a node and edge weights represent similarities among the documents. Additionally, we…

计算与语言 · 计算机科学 2017-12-08 Sachin Pawar , Nitin Ramrakhiyani , Swapnil Hingmire , Girish K. Palshikar

Task specific fine-tuning of a pre-trained neural language model using a custom softmax output layer is the de facto approach of late when dealing with document classification problems. This technique is not adequate when labeled examples…

计算与语言 · 计算机科学 2020-10-27 Natraj Raman , Armineh Nourbakhsh , Sameena Shah , Manuela Veloso

Topic Modeling is an approach used for automatic comprehension and classification of data in a variety of settings, and perhaps the canonical application is in uncovering thematic structure in a corpus of documents. A number of foundational…

机器学习 · 计算机科学 2012-04-13 Sanjeev Arora , Rong Ge , Ankur Moitra

The contribution of this paper is two-fold. First, we present Indexing by Latent Dirichlet Allocation (LDI), an automatic document indexing method. The probability distributions in LDI utilize those in Latent Dirichlet Allocation (LDA), a…

信息检索 · 计算机科学 2014-12-12 Yanshan Wang , Jae-Sung Lee , In-Chan Choi

A popular approach to topic modeling involves extracting co-occurring n-grams of a corpus into semantic themes. The set of n-grams in a theme represents an underlying topic, but most topic modeling approaches are not able to label these…

计算与语言 · 计算机科学 2017-05-19 Justin Wood , Patrick Tan , Wei Wang , Corey Arnold

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…

计算与语言 · 计算机科学 2021-08-25 Jin Cheevaprawatdomrong , Alexandra Schofield , Attapol T. Rutherford

Background: Radiography (X-rays) is the dominant modality in orthopedics, and improving the interpretation of radiographs is clinically relevant. Machine learning (ML) has revolutionized data analysis and has been applied to medicine, with…

计算机视觉与模式识别 · 计算机科学 2024-08-27 Jakub Olczak , Max Gordon