INNER CODE UNIT · Ruby

c

yoshoku/rumale · rumale-core/lib/rumale/dataset.rb:161

          c = ::Rumale::Utils.rand_normal([sz_cluster[n], n_features], rng, 0.0, cluster_std) + centers[n, true]
          x = Numo::DFloat.vstack([x, c])
          y = y.concatenate(Numo::Int32.zeros(sz_cluster[n]) + n)
        end
        # shuffle data.
        if shuffle
          rand_ids = Array(0...n_samples).shuffle(random: rng.dup)
          x = x[rand_ids, true].dup
          y = y[rand_ids].dup
        end
        [x, y]
      end

      private

      def parse_libsvm_line(line, zero_based)
        label = parse_label(line.shift)
        adj_idx = zero_based == false ? 1 : 0

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