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Fifth World Congress on Intelligent Control and Automation (IEEE Cat. No.04EX788)
A fuzzy similarity index is proposed to indicate the preictal state with EEG signal. First, during the process of calculating the correlation integral, a Heavyside function is replaced by a Gaussian function, which eliminates the effect of the crisp boundary of the Heavyside since the Gaussian function's boundary is not sharp. Second, using a real EEG to compare the fuzzy similarity index and dynamical similarity index, it is found that the fuzzy similarity index is insensitive to the selectiondoi:10.1109/wcica.2004.1343748 fatcat:mgryjccj6vbdxpckpu3dwqruce