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Introduction It is recently declared that heart period signal( HPS) is one sort of chaotic signal[1,2 ] . HPS istime variant,it changes seriously with the changeof time. So HPS is one typical sort of transientchaotic signal. In general,the signal detectedthrough electrocardiograph( ECG) is the combina-tion of heart period signal ( HPS) and noise ( NS) .For noise,the cause and background are hard toexplain,and sometimes it also changes seriouslywith the change of time.So such a prob… 相似文献
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