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Advances in Artificial Intelligence
Table of Contents
Special Issues
Advances in Artificial Intelligence
/
2009
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Article
/
Tab 5
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Review Article
A Survey of Collaborative Filtering Techniques
Table 5
Content-boosted CF and its variations (a) content data and originally sparse rating data (b) pseudorating data filled by content predictor (c) predictions from (weighted) Pearson CF on the pseudo rating data.
(a)
Content information
Rating matrix
Age
Sex
Career
zip
I
1
I
2
I
3
I
4
I
5
U
1
32
F
writer
22904
4
U
2
27
M
student
10022
2
4
3
U
3
24
M
engineer
60402
1
U
4
50
F
other
60804
3
3
3
3
U
5
28
M
educator
85251
1
(b)
Pseudo rating data
I
1
I
2
I
3
I
4
I
5
2
3
4
3
2
2
2
4
3
2
3
1
3
4
3
3
3
3
3
3
1
2
4
1
2
(c)
Pearson-CF prediction
I
1
I
2
I
3
I
4
I
5
2
3
4
2
3
3
4
2
2
3
3
3
2
3
3
3
3
3
3
3
1
3
1
2
2