A Robust Collaborative Filtering Approach Based on User Relationships for Recommendation Systems

Table 1

The pair correlations between R_Sim, In_Sim, and L_depd matrices.

Correlations	Before attacks	After attacks
(In_Sim, R_Sim)	0.627	0.540
(In_Sim, L_depd)	0.097	0.119
(R_Sim, L_depd)	0.103	0.103