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Advances in Artificial Intelligence
Table of Contents
Special Issues
Advances in Artificial Intelligence
/
2009
/
Article
/
Tab 4
/
Review Article
A Survey of Collaborative Filtering Techniques
Table 4
A simple example of ratings matrix.
I
1
I
2
I
3
I
4
U
1
4
?
5
5
U
2
4
2
1
U
3
3
2
4
U
4
4
4
U
5
2
1
3
5
