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Analýza frekvencie textu×Analýza sentimentu×TF-IDF×Modelovanie tém×
OdborDolovanie textuDolovanie textuDolovanie textuHlboké učenie
RodinaProcess / pipelineProcess / pipelineProcess / pipelineMachine learning
Rok vzniku194919881999–2003
TvorcaGeorge K. Zipf (frequency-distribution foundation)Salton & BuckleyHofmann, T. (pLSA, 1999); Blei, D. M., Ng, A. Y., & Jordan, M. I. (LDA, 2003)
TypDescriptive text-mining analysisNLP text-classification taskText vectorization / term-weighting schemeUnsupervised generative probabilistic model
Pôvodný zdrojZipf, G. K. (1949). Human Behavior and the Principle of Least Effort. Addison-Wesley. link ↗Pang, B. & Lee, L. (2008). Opinion Mining and Sentiment Analysis. Foundations and Trends in Information Retrieval, 2(1-2), 1-135. DOI ↗Salton, G. & Buckley, C. (1988). Term-weighting approaches in automatic text retrieval. Information Processing & Management, 24(5), 513-523. DOI ↗Blei, D. M., Ng, A. Y., & Jordan, M. I. (2003). Latent Dirichlet Allocation. Journal of Machine Learning Research, 3, 993–1022. link ↗
Ďalšie názvyword frequency analysis, n-gram frequency analysis, Metin Frekans Analiziopinion mining, polarity detection, duygu analiziterm weighting, tf-idf weighting, TF-IDF VektörizasyonuLatent Semantic Analysis, probabilistic topic modeling, topic discovery, thematic modeling
Príbuzné4335
ZhrnutieText frequency analysis is a descriptive text-mining method that counts how often words, n-grams, and phrases occur in a corpus to reveal content patterns and dominant themes. It rests on the frequency-distribution insight formalised by George K. Zipf (1949), that a few terms occur very often while most are rare, and it is one of the most basic and widely used entry points into quantitative text analysis.Sentiment analysis, also called opinion mining, is a natural-language-processing task that detects the emotional tone of text — typically classifying it as positive, negative, or neutral. It turns unstructured opinion text into structured, quantifiable polarity signals using one of three families of approaches: sentiment lexicons, trained machine-learning classifiers, or pretrained transformer models.TF-IDF, introduced by Salton and Buckley (1988), is a term-weighting scheme that scores each word in a document by how often it appears there and how rare it is across the whole collection. It turns raw text into weighted document vectors, giving high weight to terms that are frequent in one document but uncommon elsewhere.Topic Modeling is a family of unsupervised probabilistic techniques for discovering latent thematic structure in large text collections. By learning which words tend to co-occur, models such as Latent Dirichlet Allocation (LDA) automatically surface coherent topics — each represented as a distribution over vocabulary — without requiring labelled data.
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ScholarGatePorovnať metódy: Text Frequency Analysis · Sentiment Analysis · TF-IDF · Topic Modeling. Získané 2026-06-18 z https://scholargate.app/sk/compare