NAME¶

mlpack_preprocess_one_hot_encoding - one hot encoding

SYNOPSIS¶

 mlpack_preprocess_one_hot_encoding -i string [-d vector] [-V bool] [-o unknown] [-h -v] 

DESCRIPTION¶

This utility takes a dataset and a vector of indices and does one-hot encoding of the respective features at those indices. Indices represent the IDs of the dimensions to be one-hot encoded.

If no dimensions are specified with '--dimensions (-d)', then all categorical-type dimensions will be one-hot encoded. Otherwise, only the dimensions given in '--dimensions (-d)' will be one-hot encoded.

The output matrix with encoded features may be saved with the '--output_file (-o)' parameters.

So, a simple example where we want to encode 1st and 3rd feature from dataset ’X.csv' into 'X_output.csv' would be

$ mlpack_preprocess_one_hot_encoding --input_file X.arff --output_file X_ouput.csv --dimensions 1 --dimensions 3

REQUIRED INPUT OPTIONS¶

--input_file (-i) [string]

Matrix containing data.

OPTIONAL INPUT OPTIONS¶

--dimensions (-d) [vector]

Index of dimensions that need to be one-hot encoded (if unspecified, all categorical dimensions are one-hot encoded). Default value [].

--help (-h) [bool]

Default help info.

--info [string]

Print help on a specific option. Default value ''.

--verbose (-v) [bool]

Display informational messages and the full list of parameters and timers at the end of execution.

--version (-V) [bool]

Display the version of mlpack.

OPTIONAL OUTPUT OPTIONS¶

--output_file (-o) [unknown] Matrix to save one-hot encoded features data to.

ADDITIONAL INFORMATION¶

For further information, including relevant papers, citations, and theory, consult the documentation found at http://www.mlpack.org or included with your distribution of mlpack.