lib/rumale/kernel_machine/kernel_pca.rb in rumale-0.13.3 vs lib/rumale/kernel_machine/kernel_pca.rb in rumale-0.13.4

@@ -6,9 +6,11 @@
 module Rumale
   module KernelMachine
     # KernelPCA is a class that implements Kernel Principal Component Analysis.
     #
     # @example
+    #   require 'numo/linalg/autoloader'
+    #
     #   kernel_mat_train = Rumale::PairwiseMetric::rbf_kernel(training_samples)
     #   kpca = Rumale::KernelMachine::KernelPCA(n_components: 2)
     #   mapped_traininig_samples = kpca.fit_transform(kernel_mat_train)
     #
     #   kernel_mat_test = Rumale::PairwiseMetric::rbf_kernel(test_samples, training_samples)