chore: import upstream snapshot with attribution

2026-07-13 13:38:23 +08:00
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+Obtaining the IMDb movie review dataset
+Introducing the bag-of-words model
+  Transforming words into feature vectors
+  Assessing word relevancy via term frequency-inverse document frequency 
+  Cleaning text data
+  Processing documents into tokens
+Training a logistic regression model for document classification