[Retracted] A Personalized Recommendation System for English Teaching Resources Based on Multi-K Nearest Neighbor Regression Algorithm

Table 6

Comparison results of resource recommendation time-consuming of different methods.

Number of iterations/time	Recommended time/(s)
	This study design system	Recommendation method based on ontology and recurrent neural network	Recommendation method based on the multi-objective optimization strategy	Recommendation method based on 3D feature collaborative dominance
1	2.36	4.22	9.36	8.75
2	2.77	4.41	9.42	8.93
3	3.52	5.25	9.55	9.04
4	3.55	5.62	9.85	9.27
5	4.11	6.14	9.94	9.63
6	4.25	6.20	10.63	9.90
7	4.33	6.63	10.75	10.28
8	4.74	6.74	11.15	11.39
9	4.74	7.11	11.33	11.47
10	5.36	8.11	11.45	12.05