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Package

weka.attributeSelection

Synopsis

Ranker :

Ranks attributes by their individual evaluations. Use in conjunction with attribute evaluators (ReliefF, GainRatio, Entropy etc).

Options

The table below describes the options available for Ranker.

Option

Description

generateRanking

A constant option. Ranker is only capable of generating attribute rankings.

numToSelect

Specify the number of attributes to retain. The default value (-1) indicates that all attributes are to be retained. Use either this option or a threshold to reduce the attribute set.

startSet

Specify a set of attributes to ignore. When generating the ranking, Ranker will not evaluate the attributes in this list. This is specified as a comma seperated list off attribute indexes starting at 1. It can include ranges. Eg. 1,2,5-9,17.

threshold

Set threshold by which attributes can be discarded. Default value results in no attributes being discarded. Use either this option or numToSelect to reduce the attribute set.

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