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| Dokumentumok klaszterezése× | Kulcsszavak kinyerése× | Szöveges hangulatelemzés× | |
|---|---|---|---|
| Tudományterület | Szövegbányászat | Szövegbányászat | Szövegbányászat |
| Módszercsalád | Process / pipeline | Process / pipeline | Process / pipeline |
| Keletkezés éve | — | — | — |
| Megalkotó | — | — | — |
| Típus≠ | Unsupervised text-mining task | NLP text-mining task | NLP text-classification task |
| Alapmű≠ | Aggarwal, C. C. & Zhai, C. (2012). Mining Text Data. Springer. ISBN: 9781461432227 | Mihalcea, R. & Tarau, P. (2004). TextRank: Bringing Order into Texts. EMNLP, 404-411. link ↗ | Pang, B. & Lee, L. (2008). Opinion Mining and Sentiment Analysis. Foundations and Trends in Information Retrieval, 2(1-2), 1-135. DOI ↗ |
| Alternatív nevek | text clustering, unsupervised text grouping, Belge Kümeleme (Document Clustering) | keyphrase extraction, key term extraction, Anahtar Kelime Çıkarma (Keyword Extraction) | opinion mining, polarity detection, duygu analizi |
| Kapcsolódó≠ | 4 | 4 | 3 |
| Összefoglaló≠ | 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). | Keyword extraction is a natural-language-processing task that automatically identifies the words or phrases that best represent the content of a document. It turns a body of free text into a compact, ranked list of key terms, drawing on statistical, graph-based methods such as TextRank (Mihalcea & Tarau, 2004), or embedding-based methods such as KeyBERT (Grootendorst, 2020). | 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. |
| ScholarGateAdatkészlet ↗ |
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