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A filter for turning numeric attributes into nominal ones. Unlike discretization, it just takes all numeric values and adds them to the list of nominal values of that attribute. Useful after CSV imports, to enforce certain attributes to become nominal, e.g., the class attribute, containing values from 1 to 5.


The table below describes the options available for NumericToNominal.

Option Description
attributeIndices Specify range of attributes to act on. This is a comma separated list of attribute indices, with "first" and "last" valid values. Specify an inclusive range with "-". E.g: "first-3,5,6-10,last".
debug Turns on output of debugging information.
invertSelection Set attribute selection mode. If false, only selected (numeric) attributes in the range will be 'nominalized'; if true, only non-selected attributes will be 'nominalized'.


The table below describes the capabilites of NumericToNominal.

Capability Supported
Class Unary class, Missing class values, Empty nominal class, Relational class, String class, No class, Binary class, Numeric class, Date class, Nominal class
Attributes Binary attributes, Relational attributes, Date attributes, Missing values, Numeric attributes, String attributes, Empty nominal attributes, Unary attributes, Nominal attributes
Min # of instances 0

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