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by dangerlibrary
4773 days ago
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It's a method of determining which words in an arbitrary collection of documents (tweets, for instance) are most important when classifying those documents. Term-Frequency-Inverse-Document-Frequency. Assigns each word a score based on how often it appears in a document relative to how often it appears in all documents. https://en.wikipedia.org/wiki/Tf%E2%80%93idf |
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