User profile correlation-based similarity (UPCSim) algorithm in movie recommendation system

Journal of Big Data

Table 7 Comparison of the average RMSE values of the three algorithms

Number of Neighbors	RMSE_c	RMSE_p	RMSE_ps	RMSE_ps-c	RMSE_ps-p
10	1.0417	0.9835	0.9793	0.0624	0.0042
20	1.0248	0.9643	0.9541	0.0707	0.0102
30	1.0189	0.9574	0.9453	0.0736	0.0121
40	1.0163	0.9558	0.9427	0.0736	0.0131
50	1.0162	0.9556	0.9393	0.0769	0.0163
60	1.0154	0.9547	0.9389	0.0765	0.0158
70	1.0162	0.9544	0.9383	0.0779	0.0161
80	1.0170	0.9543	0.9381	0.0789	0.0162
90	1.0173	0.9542	0.9364	0.0809	0.0178
100	1.0176	0.9538	0.9359	0.0817	0.0179
Average	1.0201	0.9588	0.9448	0.0753	0.0140