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

Table 4

Comprehensive weights of early warning indicators based on subjective and objective weighting.

Subsystem	Indicator	Subjective and objective comprehensive weight
B1	C1	0.2005305
	C2	0.119239
	C3	0.064084
	C4	0.065223
B2	C5	0.06183
	C6	0.047872
	C7	0.053986
B3	C8	0.104746
	C9	0.079127
	C10	0.070607
	C11	0.041553
B4	C12	0.061393
	C13	0.025036