Most Informative Words: Log-Likelihood Ratios & a Ranking Chart
This lesson is part of the course
In this lesson
You compute each word's log-likelihood ratio, rank the vocabulary, pick the strongest spam and ham signals with INDEX/MATCH and chart the ranking.
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Lessons in this course
- Priors from Class Counts: How Common Is Spam? Locked
- Word Counts per Class with SUMIFS Locked
- Laplace Smoothing & Word Likelihoods Locked
- Log-Probabilities & Scoring a Message with SUMPRODUCT Locked
- Classify a Batch & Build the Confusion Matrix Locked
- Precision, Recall & F1: Moving the Threshold on the Log-Odds Locked
- Sentiment: a Word Lexicon vs Naive Bayes Locked
- Most Informative Words: Log-Likelihood Ratios & a Ranking Chart Locked