Brain Storm Optimization Ensemble Empirical Mode Decomposition Gaussian processes regression General Regression Neural Network LEM2 Long Short Term Memory Markov-switching Markov-switching GARCH QA75.5-76.95 T58.5-58.64 active investment artificial intelligence techniques asset management combination forecasting commodities comparative analysis complementary ensemble empirical mode decomposition (CEEMD) condition-based maintenance crude oil price forecasting crude oil prices data inconsistency rate deep convolutional neural network differential evolution (DE) diversification electrical power load empirical mode decomposition (EMD) energy forecasting energy futures energy price hedging ensemble