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Package*weka.attributeSelection*

Synopsis

SymmetricalUncertAttributeEval :

Evaluates the worth of an attribute by measuring the symmetrical uncertainty with respect to the class.

SymmU(Class, Attribute) = 2 * (H(Class) - H(Class | Attribute)) / H(Class) + H(Attribute).

Options

The table below describes the options available for SymmetricalUncertAttributeEval.

Option

Description

missingMerge

Distribute counts for missing values. Counts are distributed across other values in proportion to their frequency. Otherwise, missing is treated as a separate value.

Capabilities

The table below describes the capabilites of SymmetricalUncertAttributeEval.

Capability

Supported

Class

Missing class values, Nominal class, Binary class

Attributes

Nominal attributes, Date attributes, Binary attributes, Empty nominal attributes, Numeric attributes, Missing values, Unary attributes

Min # of instances

1

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