CODEWITHSUNDEEP
weka
hrzafer
hrzafer

Reputation: 1141

Filtering Attributes with Weka

I have a simple question about filtering attributes in WEKA.

Let's say I have 500 attributes 30 classes and 100 samples for each class which equals 3000 rows and 500 columns. This causes time and memory problems a you can guess.

How do I filter attributes that occur only once or twice (or n times) in 3000 rows. And is it a good idea?

Thank you

Upvotes: 3

Views: 3479

Answers (1)

Yorgos
Yorgos

Reputation: 30475

Use the following filter

weka.filters.unsupervised.attribute.RemoveUseless

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.

Upvotes: 7

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