Forecasting CO₂ Emissions in China’s Construction Industry Based on the Weighted Adaboost-ENN Model and Scenario Analysis

Table 5

Composition of variables in different features.

Feature set 1	Feature set 2	Feature set 3	Feature set 4	Feature set 5	Feature set 6
Coal	Coal	Coal	Coal	Coal	Coal
Coke	Coke	Coke	Coke	Gasoline	Gasoline
Gasoline	Kerosene	Kerosene	Kerosene	Kerosene	Kerosene
Kerosene	Diesel	Diesel	Diesel	Diesel	Diesel
Diesel	Fuel oil	Fuel oil	Fuel oil	Fuel oil	Fuel oil
Fuel oil	Natural gas	Natural gas	Natural gas	Natural gas	Natural gas
Natural gas				Electricity
	-	-	-

Note: indicates energy structure.