[mlpack-git] [mlpack/mlpack] add cli executable for data_split (#650)

[Keon Kim]

> +  const string inputLabel = CLI::GetParam<string>("input_label");
> +  const string outputTrainLabel = CLI::GetParam<string>("output_train_label");
> +  const string outputTestLabel = CLI::GetParam<string>("output_test_label");
> +
> +  // Ratio
> +  const double testRatio = CLI::GetParam<double>("test_ratio");
> +
> +  // container for input data and labels
> +  arma::mat data;
> +  arma::Mat<size_t> labels;
> +
> +  // Load Data and Labels
> +  data::Load(inputFile, data, true);
> +  data::Load(inputLabel, labels, true);
> +  arma::Row<size_t> labels_row = labels.row(0); // extract first row
> +

I only thought of integer labels by looking at the test data. How should I allow decimal labels?

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