RemoveUseless
Package
weka.filters.unsupervised.attribute
Synopsis
This filter removes attributes that do not vary at all or that vary too much. All constant attributes are deleted automatically, along with any that exceed the maximum percentage of variance parameter. The maximum variance test is only applied to nominal attributes.
Options
The table below describes the options available for RemoveUseless.
Option |
Description |
|---|---|
maximumVariancePercentageAllowed |
Set the threshold for the highest variance allowed before a nominal attribute will be deleted.Specifically, if (number_of_distinct_values / total_number_of_values * 100) is greater than this value then the attribute will be removed. |
Capabilities
The table below describes the capabilites of RemoveUseless.
Capability |
Supported |
|---|---|
Class |
Date class, Numeric class, Unary class, Binary class, String class, Missing class values, Nominal class, Relational class, Empty nominal class, No class |
Attributes |
Binary attributes, Nominal attributes, Numeric attributes, Unary attributes, String attributes, Empty nominal attributes, Missing values, Date attributes |
Min # of instances |
0 |