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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

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