Problem 2 - User-based Collaborative Filtering (15pts) Compute the missing rating in this table using user-based collaborative filtering (CF). Use cosine similarity to find the nearest neighbors. Assuming that you have computed similarity values in the following table, Le Cercle Cidade La vita God Rouge de Deu Rashomon e bella $r_u$ Newton 3 0 3 3 2 Einstein 5 4 0 2 3 Gauss 1 2 4 2 0 Aristotle 3 ? 1 0 2 1.5 Euclid 2 2 0 1 5 calculate Aristotle's rating by completing these four tasks (Please refer to Example 9.1 of the textbook): • Calculate the similarity value between Aristotle and Einstein.
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First, we need to calculate the similarity value between Aristotle and Einstein using cosine similarity. To calculate cosine similarity, we need to find the dot product of the two vectors (Aristotle and Einstein) and divide it by the product of their Show more…
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