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

Table 5

Comparison results of data loss rate.

Number of iterations/time	Data loss rate/(%)
	This study design system	Recommendation method based on ontology and recurrent neural network	Recommendation method based on the multiobjective optimization strategy	Recommendation method based on 3D feature collaborative dominance
1	0.83	2.30	3.36	4.03
2	0.87	2.41	3.42	4.12
3	0.91	2.55	4.15	4.34
4	0.94	3.22	4.35	4.50
5	0.97	3.34	4.74	4.67
6	1.10	3.50	5.63	4.89
7	1.12	3.63	5.75	5.01
8	1.15	3.74	6.15	5.27
9	1.17	4.11	6.33	5.31
10	1.18	4.13	6.45	5.64