Communication-Based Book Recommendation in Computational Social Systems

Table 1

User collaborative filtering under different K values based on the Pearson correlation coefficient.

K	Precision (%)	Recall (%)	Coverage (%)
5	5.22	6.13	33.23
10	5.43	6.77	27.74
20	7.21	6.83	22.10
40	7.39	6.71	20.29
80	6.32	6.11	15.77