Package weka.attributeSelection

Interface AttributeTransformer

All Known Implementing Classes:
PrincipalComponents
public interface AttributeTransformer
Abstract attribute transformer. Transforms the dataset.
Version:
$Revision: 8034 $
Author:
Mark Hall (mhall@cs.waikato.ac.nz)

  • Method Details

    • transformedHeader

      Instances transformedHeader() throws Exception
      Returns just the header for the transformed data (ie. an empty set of instances. This is so that AttributeSelection can determine the structure of the transformed data without actually having to get all the transformed data through getTransformedData().
      Returns:
      the header of the transformed data.
      Throws:
      Exception - if the header of the transformed data can't be determined.

    • transformedData

      Instances transformedData(Instances data) throws Exception
      Transform the supplied data set (assumed to be the same format as the training data)
      Returns:
      A set of instances representing the transformed data
      Throws:
      Exception - if the attribute could not be evaluated

    • convertInstance

      Instance convertInstance(Instance instance) throws Exception
      Transforms an instance in the format of the original data to the transformed space
      Returns:
      a transformed instance
      Throws:
      Exception - if the instance could not be transformed