From Reputation Perspective: A Hybrid Matrix Factorization for QoS Prediction in Location-Aware Mobile Service Recommendation System

Table 1

Prediction accuracy comparison result of mean squared error (MAE).

Methods	Matrix density
	5%	10%	15%	20%
UPCC	0.5931	0.5497	0.5195	0.4908
IPCC	0.6239	0.5901	0.5519	0.5227
UIPCC	0.5962	0.5319	0.5029	0.4749
PMF	0.5797	0.5201	0.4872	0.4621
LBR1	0.5647	0.5021	0.4709	0.4498
RMF	0.5639	0.4897	0.4641	0.4529
LRMF	0.5514	0.4719	0.4493	0.4384