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利用时间序列的可预测性随预测步长变化的规律，提出了一种选取最优延迟时间的新方法；用已知的混沌系统Lorenz、Rossler等产生的时间序列进行仿真计算，与重建扩展法相比，取得了较好的结果，证明了该方法的有效性。
A new method to select the optimal delay time is proposed by using the rule that the predictability of time series changes with the prediction step size. The time series generated by the known chaotic system Lorenz, Rossler, The results show that the method is effective.