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Changes the order of the classes so that the class values are no longer of in the order specified in the header. The values will be in the order specified by the user – it could be either in ascending/descending order by the class frequency or in random order. Note that this filter currently does not change the header, only the class values of the instances, so there is not much point in using it in conjunction with the FilteredClassifier. The value can also be converted back using 'originalValue(double value)' procedure.


The table below describes the options available for ClassOrder.

Option Description
classOrder Specify the class order after the filtering
seed Specify the seed of randomization of the class order


The table below describes the capabilites of ClassOrder.

Capability Supported
Class Nominal class, Binary class
Attributes Binary attributes, Missing values, Nominal attributes, Numeric attributes, Unary attributes, String attributes, Empty nominal attributes, Relational attributes, Date attributes
Min # of instances 0

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