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Table 2 Schema of the matrix obtained after the feature extraction phase

From: Combining EEG signal processing with supervised methods for Alzheimer’s patients classification

Sample Coefficient (1,1) Coefficient (E,E·M) Sample type
sample1 a (1,1) a (1,E·M) HC
sample2 a (2,1) a (2,E·M) MCI
sample N a (N,1) a (N,E·M) AD
  1. N = number of samples, M = number of coefficients, M+1 = number of features, E = number of electrodes, a = element of the matrix