延时矢量方差(DVV)方法使用的可预测性的信号在相空间来描述时间序列。DVV方法已经成功地应用于分析生物信号的性质(EEG和fMRI)。-The Delay vector variance (DVV) method uses predictability of the signal in phase space to characterize the time series.The DVV method has been successfully applied to analyse the nature of biometric signals (EEG and fMRI).