User-Based Collaborative Filtering
This lesson is part of the course
In this lesson
You predict how Ana would rate two books she has not read, from the ratings of similar readers, first as a weighted average, then mean-centred.
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Lessons in this course
- The User–Item Ratings Matrix Locked
- Cosine Similarity Between Users Locked
- User-Based Collaborative Filtering Locked
- Item-Based Similarity: "Customers Who Bought X" Locked
- Popularity Baseline & Evaluation with MAE Locked
- Bag of Words: Counting Words with Formulas Locked
- TF-IDF: Which Words Really Matter Locked
- Sentiment Scoring with a Word Lexicon Locked