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Package

weka.attributeSelection

Synopsis

GainRatioAttributeEval :

Evaluates the worth of an attribute by measuring the gain ratio with respect to the class.

GainR(Class, Attribute) = (H(Class) - H(Class | Attribute)) / H(Attribute).

Options

The table below describes the options available for GainRatioAttributeEval.

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 GainRatioAttributeEval.

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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