Research Article
A Combined Prediction Model for Hog Futures Prices Based on WOA-LightGBM-CEEMDAN
Table 1
Primary indicator system for hog futures prices.
| Category | Indicators |
| Supply | Piglet price | Sow price | Corn price | Soybean meal price |
| Demand | Lamb price | Beef price |
| Futures market | Open interest | Volume | Basis | Spot price | Previous closing price |
|
|