Research on Food Security Risk Assessment and Early Warning in China Based on BP Neural Network Model

Table 11

Simulation values of BP neural network.

BP neural network prediction
Year	Actual value	Simulation value	Simulation effect
2016	0.59172	0.5696	96.26%
2017	0.619918	0.6285	98.63%
2018	0.574006	0.5944	96.57%
2019	0.552851	0.5508	99.63%