Table 4 Sensitivity analysis results.

From: Urban virtual environment landscape design and system based on PSO-BP neural network

Enter conditions

Urban population density (people/km2)

Greening rate (%)

Building density

Model output results

Experiment 1

1000

25

0.5

0.85

Experiment 2

3000

25

0.5

0.84

Experiment 3

5000

25

0.5

0.85

Experiment 4

10,000

25

0.5

0.86