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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…

机器学习 · 计算机科学 2025-06-10 Adam Breuer

In sponsored search, retrieving synonymous keywords for exact match type is important for accurately targeted advertising. Data-driven deep learning-based method has been proposed to tackle this problem. An apparent disadvantage of this…

信息检索 · 计算机科学 2021-02-23 Yijiang Lian , Yubo Liu , Zhicong Ye , Liang Yuan , Yanfeng Zhu , Min Zhao , Jianyi Cheng , Xinwei Feng

In this paper we present a model for unsupervised topic discovery in texts corpora. The proposed model uses documents, words, and topics lookup table embedding as neural network model parameters to build probabilities of words given topics,…

计算与语言 · 计算机科学 2019-11-26 Sileye 0. Ba

In image retrieval, deep local features learned in a data-driven manner have been demonstrated effective to improve retrieval performance. To realize efficient retrieval on large image database, some approaches quantize deep local features…

图像与视频处理 · 电气工程与系统科学 2021-12-14 Hui Wu , Min Wang , Wengang Zhou , Yang Hu , Houqiang Li

Topic modeling analyzes a collection of documents to learn meaningful patterns of words. However, previous topic models consider only the spelling of words and do not take into consideration the homography of words. In this study, we…

计算与语言 · 计算机科学 2024-10-04 Takashi Shibuya , Takehito Utsuro

We propose a new problem called coordinated topic modeling that imitates human behavior while describing a text corpus. It considers a set of well-defined topics like the axes of a semantic space with a reference representation. It then…

计算与语言 · 计算机科学 2022-10-25 Pritom Saha Akash , Jie Huang , Kevin Chen-Chuan Chang

Large Language models (LLMs) have achieved encouraging results in tabular data generation. However, existing approaches require fine-tuning, which is computationally expensive. This paper explores an alternative: prompting a fixed LLM with…

机器学习 · 计算机科学 2025-02-25 Liancheng Fang , Aiwei Liu , Hengrui Zhang , Henry Peng Zou , Weizhi Zhang , Philip S. Yu

Methods of causal discovery aim to identify causal structures in a data driven way. Existing algorithms are known to be unstable and sensitive to statistical errors, and are therefore rarely used with biomedical or epidemiological data. We…

统计方法学 · 统计学 2024-07-01 Christine W Bang , Janine Witte , Ronja Foraita , Vanessa Didelez

In-context learning can help Large Language Models (LLMs) to adapt new tasks without additional training. However, this performance heavily depends on the quality of the demonstrations, driving research into effective demonstration…

计算与语言 · 计算机科学 2024-10-31 Dong Shu , Mengnan Du

In-context learning enables language models (LM) to adapt to downstream data or tasks by incorporating few samples as demonstrations within the prompts. It offers strong performance without the expense of fine-tuning. However, the…

计算与语言 · 计算机科学 2024-10-15 Jian Gu , Aldeida Aleti , Chunyang Chen , Hongyu Zhang

In the last decades, philosophers have begun using empirical data for conceptual analysis, but corpus-based conceptual analysis has so far failed to develop, in part because of the absence of reliable methods to automatically detect…

计算与语言 · 计算机科学 2019-05-27 Louis Chartrand , Mohamed Bouguessa

In-context learning (ICL) has been instrumental in adapting Large Language Models (LLMs) to downstream tasks using correct input-output examples. Recent advances have attempted to improve model performance through principles derived from…

计算与语言 · 计算机科学 2026-05-26 Hao Sun , Yong Jiang , Bo Wang , Yingyan Hou , Yan Zhang , Pengjun Xie , Fei Huang

Continual learning refers to the capability of a machine learning model to learn and adapt to new information, without compromising its performance on previously learned tasks. Although several studies have investigated continual learning…

信息检索 · 计算机科学 2024-06-21 Jingrui Hou , Georgina Cosma , Axel Finke

Topic models jointly learn topics and document-level topic distribution. Extrinsic evaluation of topic models tends to focus exclusively on topic-level evaluation, e.g. by assessing the coherence of topics. We demonstrate that there can be…

计算与语言 · 计算机科学 2017-06-19 Shraey Bhatia , Jey Han Lau , Timothy Baldwin

Extracting topics from text has become an essential task, especially with the rapid growth of unstructured textual data. Most existing works rely on highly computational methods to address this challenge. In this paper, we argue that…

计算与语言 · 计算机科学 2025-11-07 Salma Mekaoui , Hiba Sofyan , Imane Amaaz , Imane Benchrif , Arsalane Zarghili , Ilham Chaker , Nikola S. Nikolov

Topic models have been prevalent for decades to discover latent topics and infer topic proportions of documents in an unsupervised fashion. They have been widely used in various applications like text analysis and context recommendation.…

计算与语言 · 计算机科学 2024-06-25 Xiaobao Wu , Thong Nguyen , Anh Tuan Luu

When people explore and manage information, they think in terms of topics and themes. However, the software that supports information exploration sees text at only the surface level. In this paper we show how topic modeling -- a technique…

人机交互 · 计算机科学 2011-11-07 Jacob Eisenstein , Duen Horng "Polo" Chau , Aniket Kittur , Eric P. Xing

Topic taxonomies display hierarchical topic structures of a text corpus and provide topical knowledge to enhance various NLP applications. To dynamically incorporate new topic information, several recent studies have tried to expand (or…

计算与语言 · 计算机科学 2022-11-04 Dongha Lee , Jiaming Shen , Seonghyeon Lee , Susik Yoon , Hwanjo Yu , Jiawei Han

Conversational query rewriting is crucial for effective conversational search, yet traditional supervised methods require substantial labeled data, which is scarce in low-resource settings. This paper introduces Prompt-Guided In-Context…

计算与语言 · 计算机科学 2025-02-24 Raymond Wilson , Chase Carter , Cole Graham

Analyzing short texts infers discriminative and coherent latent topics that is a critical and fundamental task since many real-world applications require semantic understanding of short texts. Traditional long text topic modeling algorithms…

信息检索 · 计算机科学 2019-04-17 Qiang Jipeng , Qian Zhenyu , Li Yun , Yuan Yunhao , Wu Xindong