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| Szóegyüttesség-elemzés× | Tematikus modellezés× | |
|---|---|---|
| Tudományterület≠ | Szövegbányászat | Mélytanulás |
| Módszercsalád≠ | Process / pipeline | Machine learning |
| Keletkezés éve≠ | 1957 | 1999–2003 |
| Megalkotó≠ | J.R. Firth (distributional principle) | Hofmann, T. (pLSA, 1999); Blei, D. M., Ng, A. Y., & Jordan, M. I. (LDA, 2003) |
| Típus≠ | Text-mining / distributional-semantics technique | Unsupervised generative probabilistic model |
| Alapmű≠ | Firth, J.R. (1957). A Synopsis of Linguistic Theory. Studies in Linguistic Analysis. Oxford: Blackwell. link ↗ | Blei, D. M., Ng, A. Y., & Jordan, M. I. (2003). Latent Dirichlet Allocation. Journal of Machine Learning Research, 3, 993–1022. link ↗ |
| Alternatív nevek≠ | word co-occurrence, co-occurrence network, Kelime Eş-Oluşum Analizi | Latent Semantic Analysis, probabilistic topic modeling, topic discovery, thematic modeling |
| Kapcsolódó≠ | 4 | 5 |
| Összefoglaló≠ | Co-occurrence analysis is a text-mining technique that statistically counts the word pairs that appear together within a window or a sentence and uses their frequencies to reveal semantic maps and thematic structure. It rests on the distributional principle articulated by J.R. Firth in 1957 — that a word is characterised by the company it keeps. | 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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