Class Discretize

java.lang.Object
weka.core.pmml.Expression
weka.core.pmml.Discretize
All Implemented Interfaces:
Serializable

public class Discretize extends Expression
Class encapsulating a Discretize Expression.
Version:
$Revision 1.0 $
Author:
Mark Hall (mhall{[at]}pentaho{[dot]}com)
See Also:
  • Constructor Details

    • Discretize

      public Discretize(Element discretize, FieldMetaInfo.Optype opType, ArrayList<Attribute> fieldDefs) throws Exception
      Constructs a Discretize Expression
      Parameters:
      discretize - the Element containing the discretize expression
      opType - the optype of this Discretize Expression
      fieldDefs - the structure of the incoming fields
      Throws:
      Exception - if the optype is not categorical/ordinal or if there is a problem parsing this element
  • Method Details

    • setFieldDefs

      public void setFieldDefs(ArrayList<Attribute> fieldDefs) throws Exception
      Set the field definitions for this Expression to use
      Overrides:
      setFieldDefs in class Expression
      Parameters:
      fieldDefs - the field definitions to use
      Throws:
      Exception - if there is a problem setting the field definitions
    • getResult

      public double getResult(double[] incoming) throws Exception
      Get the result of evaluating the expression. In the case of a continuous optype, a real number is returned; in the case of a categorical/ordinal optype, the index of the nominal value is returned as a double.
      Specified by:
      getResult in class Expression
      Parameters:
      incoming - the incoming parameter values
      Returns:
      the result of evaluating the expression
      Throws:
      Exception - if there is a problem computing the result
    • getResultCategorical

      public String getResultCategorical(double[] incoming) throws Exception
      Gets the result of evaluating the expression when the optype is categorical or ordinal as the actual String value.
      Specified by:
      getResultCategorical in class Expression
      Parameters:
      incoming - the incoming parameter values
      Returns:
      the result of evaluating the expression
      Throws:
      Exception - if the optype is continuous
    • toString

      public String toString(String pad)
      Overrides:
      toString in class Expression