Jämför metoder
Granska de valda metoderna sida vid sida; rader som skiljer sig är markerade.
| Orsanalys× | TF-IDF× | |
|---|---|---|
| Ämnesområde | Textutvinning | Textutvinning |
| Familj | Process / pipeline | Process / pipeline |
| Ursprungsår≠ | 1957 | 1988 |
| Upphovsperson≠ | J.R. Firth (distributional principle) | Salton & Buckley |
| Typ≠ | Text-mining / distributional-semantics technique | Text vectorization / term-weighting scheme |
| Ursprungskälla≠ | Firth, J.R. (1957). A Synopsis of Linguistic Theory. Studies in Linguistic Analysis. Oxford: Blackwell. link ↗ | Salton, G. & Buckley, C. (1988). Term-weighting approaches in automatic text retrieval. Information Processing & Management, 24(5), 513-523. DOI ↗ |
| Alias | word co-occurrence, co-occurrence network, Kelime Eş-Oluşum Analizi | term weighting, tf-idf weighting, TF-IDF Vektörizasyonu |
| Närliggande≠ | 4 | 3 |
| Sammanfattning≠ | 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. | 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. |
| ScholarGateDatamängd ↗ |
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