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

Table 9

Ranking the features importance of hog futures prices.

LightGBM		XGBoost		GBDT
Features	Score	Features	Score	Features	Score
Volume	0.354167	Sow price	0.203349	Sow price	0.205162
Sow price	0.270833	Lamb price	0.129648	Volume	0.204963
Previous closing price	0.229167	Beef price	0.12844	Corn price	0.189453
Piglet price	0.0625	Spot price	0.121461	Spot price	0.167043
Spot price	0.0625	Piglet price	0.115235	Piglet price	0.109867
Lamb price	0.020833	Corn price	0.114087	Previous closing price	0.065497
Corn price	0	Previous closing price	0.104195	Lamb price	0.035748
Beef price	0	Volume	0.083584	Beef price	0.022267