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This study addresses an image-matching problem in challenging cases, such as large scene variations or textureless scenes. To gain robustness to such situations, most previous studies have attempted to encode the global contexts of a scene…

计算机视觉与模式识别 · 计算机科学 2023-06-30 Khang Truong Giang , Soohwan Song , Sungho Jo

Science progresses by building upon the prior body of knowledge documented in scientific publications. The acceleration of research makes it hard to stay up-to-date with the recent developments and to summarize the ever-growing body of…

计算与语言 · 计算机科学 2023-11-07 Martin Funkquist , Ilia Kuznetsov , Yufang Hou , Iryna Gurevych

Topic models aim to reveal latent structures within a corpus of text, typically through the use of term-frequency statistics over bag-of-words representations from documents. In recent years, conceptual entities -- interpretable,…

计算与语言 · 计算机科学 2024-08-27 Manuel V. Loureiro , Steven Derby , Tri Kurniawan Wijaya

Topic modeling is used for discovering latent semantic structure, usually referred to as topics, in a large collection of documents. The most widely used methods are Latent Dirichlet Allocation and Probabilistic Latent Semantic Analysis.…

计算与语言 · 计算机科学 2020-08-24 Dimo Angelov

Determining semantic similarity between academic documents is crucial to many tasks such as plagiarism detection, automatic technical survey and semantic search. Current studies mostly focus on semantic similarity between concepts,…

计算与语言 · 计算机科学 2017-12-01 Ming Liu , Bo Lang , Zepeng Gu

Current topic models often suffer from discovering topics not matching human intuition, unnatural switching of topics within documents and high computational demands. We address these concerns by proposing a topic model and an inference…

计算与语言 · 计算机科学 2018-02-06 Johannes Schneider

Topic models have been widely used in discovering latent topics which are shared across documents in text mining. Vector representations, word embeddings and topic embeddings, map words and topics into a low-dimensional and dense real-value…

计算与语言 · 计算机科学 2017-02-24 Jarvan Law , Hankz Hankui Zhuo , Junhua He , Erhu Rong

Topic models extract representative word sets - called topics - from word counts in documents without requiring any semantic annotations. Topics are not guaranteed to be well interpretable, therefore, coherence measures have been proposed…

机器学习 · 计算机科学 2014-03-26 Frank Rosner , Alexander Hinneburg , Michael Röder , Martin Nettling , Andreas Both

Topic modelling is a pivotal unsupervised machine learning technique for extracting valuable insights from large document collections. Existing neural topic modelling methods often encode contextual information of documents, while ignoring…

计算与语言 · 计算机科学 2025-02-07 Yanan Ma , Chenghao Xiao , Chenhan Yuan , Sabine N van der Veer , Lamiece Hassan , Chenghua Lin , Goran Nenadic

Topic pages aggregate useful information about an entity or concept into a single succinct and accessible article. Automated creation of topic pages would enable their rapid curation as information resources, providing an alternative to…

计算与语言 · 计算机科学 2024-05-06 John Giorgi , Amanpreet Singh , Doug Downey , Sergey Feldman , Lucy Lu Wang

Topic models have evolved from conventional Bayesian probabilistic models to recent Neural Topic Models (NTMs). Although NTMs have shown promising performance when trained and tested on a specific corpus, their generalisation ability across…

计算与语言 · 计算机科学 2024-06-14 Xiaohao Yang , He Zhao , Dinh Phung , Lan Du

The growing use of unstructured text in business research makes topic modeling a central tool for constructing explanatory variables from reviews, social media, and open-ended survey responses, yet existing approaches function poorly as…

计算与语言 · 计算机科学 2026-03-05 Stephan Ludwig , Peter J. Danaher , Xiaohao Yang

Topic models are valuable for understanding extensive document collections, but they don't always identify the most relevant topics. Classical probabilistic and anchor-based topic models offer interactive versions that allow users to guide…

机器学习 · 计算机科学 2024-02-08 Kyle Seelman , Mozhi Zhang , Jordan Boyd-Graber

Many data sets contain rich information about objects, as well as pairwise relations between them. For instance, in networks of websites, scientific papers, and other documents, each node has content consisting of a collection of words, as…

机器学习 · 计算机科学 2014-10-30 Yaojia Zhu , Xiaoran Yan , Lise Getoor , Cristopher Moore

Steady progress has been made in abstractive summarization with attention-based sequence-to-sequence learning models. In this paper, we propose a new decoder where the output summary is generated by conditioning on both the input text and…

机器学习 · 计算机科学 2019-08-21 Melissa Ailem , Bowen Zhang , Fei Sha

Topic models have a rich history with various applications and have recently been reinvigorated by neural topic modeling. However, these numerous topic models adopt totally distinct datasets, implementations, and evaluations. This impedes…

计算与语言 · 计算机科学 2024-06-17 Xiaobao Wu , Fengjun Pan , Anh Tuan Luu

There is an increasing interest in the use of mathematical word problem (MWP) generation in educational assessment. Different from standard natural question generation, MWP generation needs to maintain the underlying mathematical operations…

计算与语言 · 计算机科学 2021-09-10 Tianqiao Liu , Qiang Fang , Wenbiao Ding , Hang Li , Zhongqin Wu , Zitao Liu

Topic modeling is a well-established technique for exploring text corpora. Conventional topic models (e.g., LDA) represent topics as bags of words that often require "reading the tea leaves" to interpret; additionally, they offer users…

计算与语言 · 计算机科学 2024-04-03 Chau Minh Pham , Alexander Hoyle , Simeng Sun , Philip Resnik , Mohit Iyyer

Comparative text mining extends from genre analysis and political bias detection to the revelation of cultural and geographic differences, through to the search for prior art across patents and scientific papers. These applications use…

信息检索 · 计算机科学 2019-11-27 Julian Risch , Ralf Krestel

Extracting and identifying latent topics in large text corpora has gained increasing importance in Natural Language Processing (NLP). Most models, whether probabilistic models similar to Latent Dirichlet Allocation (LDA) or neural topic…

计算与语言 · 计算机科学 2023-03-31 Anton Thielmann , Quentin Seifert , Arik Reuter , Elisabeth Bergherr , Benjamin Säfken