Class InverseOfTransform

JSAT/src/jsat/datatransform/InverseOfTransform.java:19–63

Creates a new Transform object that simply uses the inverse of an InvertibleTransform as a regular transform. This allows one to apply inverses after the fact in a simple matter like: DataSet x = //some data set; InvertibleTransform transform = //some transform; x.applyTransfo

 * @author Edward Raff
 */
public class InverseOfTransform implements DataTransform 
{

    private static final long serialVersionUID = 2565737661260748018L;
    private InvertibleTransform transform;

    /**
     * Creates a new transform that uses the 
     * {@link InvertibleTransform#transform(jsat.classifiers.DataPoint) 
     * transform} of the given transform
     * @param transform the transform to use the inverse function of
     */
    public InverseOfTransform(InvertibleTransform transform)
    {
        this.transform = transform;
    }

    @Override
    public void fit(DataSet data)
    {
        //no-op, nothing to do
    }

    /**
     * Copy constructor
     * @param toClone the object to copy
     */
    public InverseOfTransform(InverseOfTransform toClone)
    {
        this(toClone.transform.clone());
    }

    @Override
    public DataPoint transform(DataPoint dp)
    {
        return transform.inverse(dp);
    }

    @Override
    public InverseOfTransform clone()
    {
        return new InverseOfTransform(this);
    }
    
}