3Xin Jin, Shalabh Gupta, Kushal Mukherjee, et al. Wavelet - based feature extraction using probabilistic finite state automata for pattern classification [ J ]. Pattern Recognition, 2011,44 : 1343 - 1356.
4THEILER J, LINSAY P S, RUBIN D M. Detecting nonlinearity in data with long oherence time [ C ]//Time Series Prediction:Fore- casting the Future and Understanding the Past. New York:Per- seus Bocks Publishing, 1993:29 - 455.
5MICHAEL T Rosenstein ,JAMES J Collins, CARLO J De Luca. A practical method for calculating largest Lyapunov exponents from small data sets [ J ]. Physical D, 1993,65 : 117 - 134.
6Richman J S, Moorman J R. Physiological time - series analysis using approximate entropy and sample entropy [ J ]. American Journal of Physiology - Heart Circulatory Physiology, 2000,278 : 2039 - 2049.