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(A) The features were channels, the samples were 4000 firstly, then split into two classes, training dataset (70%, 2800) and testing dataset (30%, 1200), respectively. (B) The training dataset was split randomly into 10 sub-datasets as 10-fold cross-valid processing, 9 were bagged as training dataset, and 1 was validation dataset. (C) The processing of training model. (D) The processing of testing model.
