Porovnat metody
Prohlédněte si vybrané metody vedle sebe; řádky, které se liší, jsou zvýrazněny.
| Shlukování dokumentů× | Klasifikace textu× | TF-IDF× | |
|---|---|---|---|
| Obor | Dolování textu | Dolování textu | Dolování textu |
| Rodina | Process / pipeline | Process / pipeline | Process / pipeline |
| Rok vzniku≠ | — | — | 1988 |
| Tvůrce≠ | — | — | Salton & Buckley |
| Typ≠ | Unsupervised text-mining task | Supervised NLP classification task | Text vectorization / term-weighting scheme |
| Původní zdroj≠ | Aggarwal, C. C. & Zhai, C. (2012). Mining Text Data. Springer. ISBN: 9781461432227 | Joachims, T. (1998). Text Categorization with Support Vector Machines: Learning with Many Relevant Features. ECML 1998. Lecture Notes in Computer Science, vol 1398. Springer. DOI ↗ | Salton, G. & Buckley, C. (1988). Term-weighting approaches in automatic text retrieval. Information Processing & Management, 24(5), 513-523. DOI ↗ |
| Další názvy≠ | text clustering, unsupervised text grouping, Belge Kümeleme (Document Clustering) | text categorization, document classification, topic classification, metin sınıflandırma | term weighting, tf-idf weighting, TF-IDF Vektörizasyonu |
| Příbuzné≠ | 4 | 4 | 3 |
| Shrnutí≠ | Document clustering is an unsupervised text-mining task that groups documents with similar content together without using any labels. It is used to organise large collections and for exploratory analysis, drawing on the body of text-mining techniques consolidated by Aggarwal and Zhai (2012) and compared empirically by Steinbach, Karypis and Kumar (2000). | Text classification, also called text categorization, is a supervised natural-language-processing task that automatically assigns documents to predefined categories. Building on the support-vector-machine approach to text categorization established by Joachims (1998) and consolidated in the text-mining literature by Aggarwal and Zhai (2012), it powers tasks such as spam detection and topic classification by learning from labelled examples. | 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. |
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