Communication-Based Book Recommendation in Computational Social Systems

Table 3

User collaborative filtering under different K values based on cosine similarity.

K	Precision (%)	Recall (%)	Coverage (%)
5	8.22	10.22	35.23
10	8.50	15.37	27.24
20	8.66	15.55	25.33
40	8.21	14.28	22.34
80	7.31	10.33	20.31