TF-IDF Calculator

Overview

The TF-IDF (Term Frequency-Inverse Document Frequency) Calculator computes word importance scores across a document collection. Words frequent in a document but rare across the corpus get high scores. Essential for information retrieval, document similarity, and feature extraction.

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Tips

• TF (Term Frequency): how often a word appears in a document
• IDF (Inverse Document Frequency): how rare a word is across all documents
• TF-IDF = TF × IDF balances local and global importance
• High TF-IDF means word is important to specific document
• Applications: search engines, document classification, keyword extraction
• Common words like “the” get low IDF scores
• Try different documents to see how scores change