Hierarchical Social Recommendation Model Based on a Graph Neural Network

Table 3

RMSE and MAE of different communication levels.

Layers	Ciao		Epinions
	MAE	RMSE	MAE	RMSE
GHSCF-1	0.7271	0.9605	0.8081	1.0558
GHSCF-2	0.7238	0.9598	0.8075	1.0247
GHSCF-3	0.7206	0.9194	0.8071	0.9731
GHSCF-4	0.7229	0.9601	0.8068	1.0331