Journal of Lanzhou University of Technology ›› 2021, Vol. 47 ›› Issue (4): 83-90.

• Automation Technique and Computer Technology • Previous Articles     Next Articles

Random forest regression model based on improved fruit fly optimization algorithm and its application in wind speed forecasting

ZHU Chang-sheng, LI Sui-han   

  1. College of Computer and Communication, Lanzhou Univ. of Tech., Lanzhou 730050, China
  • Received:2019-12-12 Online:2021-08-01 Published:2021-09-07

Abstract: To solve the problem that it is difficult to determine the combination of parameters and obtain the precise forecasting results for the wind speed forecasting based on random forest (RF), an improved fruit fly optimization algorithm (IFOA) was used to optimize the parameters of RFR. Exponential function and trigonometric function were introduced into the fruit fly optimization algorithm (FOA) to realize the adaptive update of step size in search, which enhances the algorithm’s ability of global optimization and local exploration. Combining the advantages of RFR with a good tolerance for noise and abnormal values, IFOA was used to optimize the main parameters of RFR, and the optimized model was applied to wind speed forecasting. The experimental results show that the IFOA-RFR combined model has higher prediction accuracy compared with other models, and the feasibility of this method in wind speed prediction is verified.

Key words: fruit fly optimization algorithm, random forest, parameter optimization, wind speed forecasting

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