Fig. 2From: Kernel principal components based cascade forest towards disease identification with human microbiotaThe parameters selection in grid search. We used four kernel functions, “linear”, “rbf”, “poly”, and ”sigmoid” for verification, and combined the information of the four datasets to verify the gamma as 0.005, 0.01, 0.02, 0.03, 0.04, 0.05, 0.06Back to article page