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An important aspect of text mining involves information retrieval in form of discovery of semantic themes (topics) from documents using topic modelling. While generative topic models like Latent Dirichlet Allocation (LDA) or Latent Semantic…

机器学习 · 计算机科学 2025-11-04 Satyajeet Sahoo , Jhareswar Maiti

The recent proliferation of richly structured probabilistic models raises the question of how to automatically determine an appropriate model for a dataset. We investigate this question for a space of matrix decomposition models which can…

机器学习 · 计算机科学 2012-10-19 Roger Grosse , Ruslan R Salakhutdinov , William T. Freeman , Joshua B. Tenenbaum

Inspired by deep convolution segmentation algorithms, scene text detectors break the performance ceiling of datasets steadily. However, these methods often encounter threshold selection bottlenecks and have poor performance on text…

计算机视觉与模式识别 · 计算机科学 2023-08-17 Guiqin Zhao

Experimental methods for estimating the impacts of text on human evaluation have been widely used in the social sciences. However, researchers in experimental settings are usually limited to testing a small number of pre-specified text…

计算与语言 · 计算机科学 2024-12-04 Megan Ayers , Luke Sanford , Margaret Roberts , Eddie Yang

Word segmentation, the problem of finding word boundaries in speech, is of interest for a range of tasks. Previous papers have suggested that for sequence-to-sequence models trained on tasks such as speech translation or speech recognition,…

计算与语言 · 计算机科学 2021-09-22 Ramon Sanabria , Hao Tang , Sharon Goldwater

Text alignment is crucial to the accuracy of Machine Translation (MT) systems, some NLP tools or any other text processing tasks requiring bilingual data. This research proposes a language independent sentence alignment approach based on…

计算与语言 · 计算机科学 2015-10-01 Krzysztof Wołk , Krzysztof Marasek

Recently, tampered text detection has attracted increasing attention due to its essential role in information security. Although existing methods can detect the tampered text region, the interpretation of such detection remains unclear,…

计算机视觉与模式识别 · 计算机科学 2025-01-16 Chenfan Qu , Jian Liu , Haoxing Chen , Baihan Yu , Jingjing Liu , Weiqiang Wang , Lianwen Jin

Large language models (LLMs) offer substantial promise for text classification in political science, yet their effectiveness often depends on high-quality prompts and exemplars. To address this, we introduce a three-stage framework that…

计算与语言 · 计算机科学 2025-04-08 Menglin Liu , Ge Shi

Language segmentation consists in finding the boundaries where one language ends and another language begins in a text written in more than one language. This is important for all natural language processing tasks. The problem can be solved…

计算与语言 · 计算机科学 2015-10-07 David Alfter

Abstract: In this paper we present an approach to develop a text-classification model which would be able to identify populist content in text. The developed BERT-based model is largely successful in identifying populist content in text and…

计算与语言 · 计算机科学 2021-06-11 Jogilė Ulinskaitė , Lukas Pukelis

The goal of diversity sampling is to select a representative subset of data in a way that maximizes information contained in the subset while keeping its cardinality small. We introduce the ordered diverse sampling problem based on a new…

计算与语言 · 计算机科学 2025-03-17 Ashish Tiwari , Mukul Singh , Ananya Singha , Arjun Radhakrishna

With rapidly evolving media narratives, it has become increasingly critical to not just extract narratives from a given corpus but rather investigate, how they develop over time. While popular narrative extraction methods such as Large…

计算与语言 · 计算机科学 2025-06-26 Kai-Robin Lange , Tobias Schmidt , Matthias Reccius , Henrik Müller , Michael Roos , Carsten Jentsch

Probabilistic topic models are generative models that describe the content of documents by discovering the latent topics underlying them. However, the structure of the textual input, and for instance the grouping of words in coherent text…

计算与语言 · 计算机科学 2016-06-02 Georgios Balikas , Massih-Reza Amini , Marianne Clausel

Existing topic modeling and text segmentation methodologies generally require large datasets for training, limiting their capabilities when only small collections of text are available. In this work, we reexamine the inter-related problems…

信息检索 · 计算机科学 2021-05-26 Qiong Wu , Adam Hare , Sirui Wang , Yuwei Tu , Zhenming Liu , Christopher G. Brinton , Yanhua Li

Topic models are a class of unsupervised learning algorithms for detecting the semantic structure within a text corpus. Together with a subsequent dimensionality reduction algorithm, topic models can be used for deriving spatializations for…

计算与语言 · 计算机科学 2023-10-26 Daniel Atzberger , Tim Cech , Willy Scheibel , Matthias Trapp , Rico Richter , Jürgen Döllner , Tobias Schreck

Word feature vectors have been proven to improve many NLP tasks. With recent advances in unsupervised learning of these feature vectors, it became possible to train it with much more data, which also resulted in better quality of learned…

计算与语言 · 计算机科学 2022-11-29 Marius Sajgalik , Michal Barla , Maria Bielikova

The conventional natural language processing approaches are not accustomed to the social media text due to colloquial discourse and non-homogeneous characteristics. Significantly, the language identification in a multilingual document is…

计算与语言 · 计算机科学 2021-06-30 M Zeeshan Ansari , Tanvir Ahmad , M M Sufyan Beg , Asma Ikram

We develop necessary and sufficient conditions and a novel provably consistent and efficient algorithm for discovering topics (latent factors) from observations (documents) that are realized from a probabilistic mixture of shared latent…

机器学习 · 计算机科学 2015-12-07 Weicong Ding , Prakash Ishwar , Venkatesh Saligrama

Statistical topic models provide a general data-driven framework for automated discovery of high-level knowledge from large collections of text documents. While topic models can potentially discover a broad range of themes in a data set,…

人工智能 · 计算机科学 2008-08-08 Chaitanya Chemudugunta , Padhraic Smyth , Mark Steyvers

Given a sequence composed of a limit number of characters, we try to "read" it as a "text". This involves to segment the sequence into "words". The difficulty is to distinguish good segmentation from enormous number of random ones.Aiming at…

生物物理 · 物理学 2009-11-06 Bin Wang