Communication-Based Book Recommendation in Computational Social Systems

Table 2

User collaborative filtering under different K values based on Jaccard.

K	Precision (%)	Recall (%)	Coverage (%)
5	4.31	5.42	25.22
10	4.92	6.31	22.66
20	5.11	6.49	20.45
40	6.39	7.71	20.21
80	5.90	7.00	18.33