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

Table 1

Importance of scale values of indicators.

Index 1 versus index 2	Scale value
Equally important	1
Slightly important	5
Obviously important	3
Strongly important	6
Extremely important	9
Between the above importance	2, 3, 4, 7, and 8