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Converts all nominal attributes into binary numeric attributes. An attribute with k values is transformed into k binary attributes if the class is nominal (using the one-attribute-per-value approach). Binary attributes are left binary, if option '-A' is not given.If the class is numeric, you might want to use the supervised version of this filter.


The table below describes the options available for NominalToBinary.

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".
binaryAttributesNominal Whether resulting binary attributes will be nominal.
invertSelection Set attribute selection mode. If false, only selected (numeric) attributes in the range will be discretized; if true, only non-selected attributes will be discretized.
transformAllValues Whether all nominal values are turned into new attributes, not only if there are more than 2.


The table below describes the capabilites of NominalToBinary.

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

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