Combined forecasting Forecasting 2 Forecasting models 2 ARIMA models 1 Birds 1 Clean energy 1 Clean energy consumption 1 Combination models 1 Combined modeling 1 Complementary ensemble empirical mode decomposition 1 Data original feature extraction 1 Disasters 1 Electric power plant loads 1 Empirical Mode Decomposition 1 Energy 1 Energy policy 1 Energy utilization 1 Entropy 1 Extraction 1 Feature extraction 1 Features extraction 1 Genetic algorithms 1 Improved swarm intelligence optimization algorithm 1 Least square support vector regression 1 Least squares approximations 1 Least squares support vector regression 1 Linear regression 1 Load forecasting 1 Minimum variance 1 Nonlinear programming 1