Comparative study of approximate entropy and sample entropy robustness to spikes
OBJECTIVE: There is an ongoing research effort devoted to characterize the signal
regularity metrics approximate entropy (ApEn) and sample entropy (SampEn) in order to
better interpret their results in the context of biomedical signal analysis. Along with this line,
this paper addresses the influence of abnormal spikes (impulses) on ApEn and SampEn
measurements. METHODS: A set of test signals consisting of generic synthetic signals,
simulated biomedical signals, and real RR records was created. These test signals were …
regularity metrics approximate entropy (ApEn) and sample entropy (SampEn) in order to
better interpret their results in the context of biomedical signal analysis. Along with this line,
this paper addresses the influence of abnormal spikes (impulses) on ApEn and SampEn
measurements. METHODS: A set of test signals consisting of generic synthetic signals,
simulated biomedical signals, and real RR records was created. These test signals were …
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