Design of Key Technologies for Elderly Public Network Services Based on Intelligent Recommendations

Table 4

Accuracy statistics for the three algorithms.

Number of nearest neighbours	Precision
	XGBoost	Collaborative filtering	Hybrid algorithms
2	0.2	0.25	0.30
7	0.24	0.31	0.38
12	0.37	0.39	0.44
17	0.44	0.46	0.51
22	0.58	0.62	0.68
27	0.67	0.72	0.77
32	0.71	0.77	0.82
37	0.77	0.81	0.86
42	0.81	0.85	0.90
47	0.83	0.88	0.94