question archive Recommendation Systems [Method]
Recommendation Systems [Method]
Subject:Computer SciencePrice: Bought3
Recommendation Systems [Method]. This is a introduction to machine learning subject question.Consider the following table, showing the ratings given by two Users (A and B) to three Items (1, 2, and 3). Apply User-based Collaborative filtering strategy with Pearson correlation as the similarity measure to answer the following questions.
Item 1 Item 2 Item 3
User A 6 4 ?
User B 3 ? 1
Questions :-
1. What is the similarity between User A and User B? (show your working)
2. What is the predicted rating of Item 3 for User A? (show your working)
3. Explain why the predicted rating for item 3 is above/below User A's average rating? (in one sentence)
