Research Article

Multistep-Ahead Stock Price Forecasting Based on Secondary Decomposition Technique and Extreme Learning Machine Optimized by the Differential Evolution Algorithm

Table 2

The one-step, three-step, and five-step-ahead forecasting performance comparisons of the S&P 500 index and the HS300 index for different forecasting models.

ModelS&P 500 indexHS300 index

1-step
ELM23.927117.65920.006034.801827.01620.0070
KELM23.130016.97330.005834.509226.40490.0069
DE-ELM22.317316.48400.005634.209726.09370.0068

3-step
ELM24.158117.68310.006034.684826.99150.0070
KELM23.054617.07130.005834.427426.41670.0069
DE-ELM22.926617.01200.005834.048326.29690.0068

5-step
ELM23.648517.51480.005934.090726.86090.0070
KELM23.179517.17550.005833.923726.31420.0069
DE-ELM22.607816.82800.005733.318025.75680.0067

Note. The best performance in all models.