Implement proper Laplace smoothing in Bayes classifier#80
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Replace magic number 0.1 with proper add-one (Laplace) smoothing: P(word|category) = (count + 1) / (total + vocab_size) This ensures smoothing scales correctly with vocabulary size and applies consistently to both seen and unseen words. Fixes #64
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Summary
0.1with proper add-one (Laplace) smoothingP(word|category) = (count + 1) / (total + vocab_size)Before
After
Test Plan
Fixes #64