[Retracted] PCA and Binary -Means Clustering Based Collaborative Filtering Recommendation

Table 1

Performance comparison of collaborative filtering recommendation methods.

Algorithm\index	Recall	Precision	MAE	Time cost	Space cost
Traditional collaborative filtering algorithm	Low	Low	Low	Big	Small
Collaborative filtering recommendation algorithm based on PCA dimension reduction and binary -means clustering	Hight	Hight	Hight	Small	Big
Collaborative filtering algorithm based on slope one matrix prefilling model, principal component analysis, and binary -means clustering	Hight	Hight	Hight	More small	More big