Constructor Detail

• DerivedFieldMetaInfo

  public DerivedFieldMetaInfo​(org.w3c.dom.Element derivedField,
                              java.util.ArrayList<Attribute> fieldDefs,
                              weka.core.pmml.TransformationDictionary transDict)
                       throws java.lang.Exception

  Throws:

  java.lang.Exception

Method Detail

• setFieldDefs

  public void setFieldDefs​(java.util.ArrayList<Attribute> fieldDefs)
                    throws java.lang.Exception

  Upadate the field definitions for this derived field

  Parameters:

  fieldDefs -

  Throws:

  java.lang.Exception

• getFieldAsAttribute

  public Attribute getFieldAsAttribute()

  Get this derived field as an Attribute.

  Specified by:

  getFieldAsAttribute in class FieldMetaInfo

  Returns:

  an Attribute for this derived field.

• getDerivedValue

  public double getDerivedValue​(double[] incoming)
                         throws java.lang.Exception

  Get the derived field value for the given incoming vector of values. Incoming values are assumed to be in the same order as the attributes supplied in the field definitions ArrayList used to construct this DerivedField. If the optype of this derived field is continuous, then a real number is returned. Otherwise, the number returned is the index of the categorical/ordinal value corresponding to result of computing the derived field value.

  Parameters:

  incoming - the incoming parameter values

  Returns:

  the result of computing the derived value

  Throws:

  java.lang.Exception - if there is a problem computing the value

• toString

  public java.lang.String toString()

  Overrides:

  toString in class java.lang.Object