Category to Number

This node takes columns with nominal data and maps every category to an integer. For your convenience, you can process multiple columns with this node. However, these columns are processed separately as if you would use a single Category To Number node for every column.

Options

Columns to transform

Select the columns to be converted from nominal (category) values to numbers. Only columns with nominal data are available. Use the include/exclude lists to specify which columns should be processed.

Append suffix to column name

If checked, append the given suffix to the names of the computed columns. Otherwise the computed columns replace the columns in the include list.

Start value

The category in the first row will be mapped to this value.

Increment

The i-th category is mapped to the value i * Increment + Start value.

Maximum number of categories

Processing is interrupted for inputs with more categories.

Use default value in PMML

This value is used when the PMML model is applied. It defines the value used when the input is not found in the mapping. If disabled, a missing cell is assigned in this case.

Map missing cells to number

Missing cells are mapped to this value. If disabled, missing cells will be mapped to missing cells.

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