Combined Forecasting of Ship Heave Motion Based on Induced Ordered Weighted Averaging Operator

Heave motion of ships is a complex nonlinear dynamic process and cannot be accurately forecasted using a single prediction model. In this paper, an effective combined forecasting method is proposed to perform ship's heave motion prediction. The proposed method combines back propagation neural network (BPNN), autoregressive model (AR) and extreme learning machine (ELM) through an induced ordered weighted averaging (IOWA) operator. The prediction accuracy is selected as the induced variable and the prediction results are sorted according to prediction accuracy and IOWA operator assigns larger weights to the position with the smallest prediction error. The optimal weights are determined by maximizing the B-mode relational degree. Experimental results demonstrate its effectiveness of the proposed method. (c) 2022 Institute of Electrical Engineers of Japan. Published by Wiley Periodicals LLC.