An Improved Scheme for the Forecast of Time Series by Using Chebyshev Polynomials
用车贝雪夫多项式做时间序列预报的一种改进方案

To raise the accuracy of forecast an improved acheme is presented in this paper for the forecasting method of time series proposed by the author previously. The main points of the scheme are: (1) using different iteFgtion numbers for different initial values of iteration;.(2) using different means of fitting for predicted value obtained from final value of iteration; (3) taking the final value as prediction when it is difficult to difine the sign of final value of iteration. The results indicate that the accuracy of the forecast may be raised by using the improved scheme.