[Retracted] Optimization of Online Teaching Quality Evaluation Model Based on Hierarchical PSO-BP Neural Network

Table 5

List of explanations of the total variance.

Ingredient	Initial eigenvalue			Extract the sum of squares of the load			Rotating load sum of squares
	Total	Variance percentage	Cumulative percentage	Total	Variance percentage	Cumulative percentage	Total	Variance percentage	Cumulative percentage
1	5.714	31.742	31.742	5.712	31.742	31.742	2.522	13.889	13.998
2	1.372	7.618	39.361	1.373	7.618	39.361	2.416	13.417	27.414
3	1.186	6.597	45.957	1.186	6.597	45.957	2.214	12.305	39.722
4	1.044	5.805	51.761	1.044	5.805	51.763	2.168	12.042	51.763