A Combined Prediction Model for Hog Futures Prices Based on WOA-LightGBM-CEEMDAN

Table 2

Results of GRA.

Category	Indicators	GRA
Supply	Piglet price	0.85
	Sow price	0.81
	Corn price	0.76
	Soybean meal price	0.64
Demand	Lamb price	0.81
	Beef price	0.77
Futures market	Open interest	0.64
	Volume	0.73
	Basis	0.69
	Spot price	0.79
	Previous closing price	0.96