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 |