Package weka.core.pmml
Class BuiltInArithmetic
- java.lang.Object
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- weka.core.pmml.Function
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- weka.core.pmml.BuiltInArithmetic
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- All Implemented Interfaces:
java.io.Serializable
public class BuiltInArithmetic extends Function
Built-in function for +, -, *, /.- Version:
- $Revision 1.0 $
- Author:
- Mark Hall (mhall{[at]}pentaho{[dot]}com)
- See Also:
- Serialized Form
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Constructor Summary
Constructors Constructor Description BuiltInArithmetic(weka.core.pmml.BuiltInArithmetic.Operator op)
Construct a new Arithmetic built-in pmml function.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description Attribute
getOutputDef()
Get the structure of the result produced by this function.java.lang.String[]
getParameterNames()
Returns an array of the names of the parameters expected as input by this functiondouble
getResult(double[] incoming)
Get the result of applying this function.void
setParameterDefs(java.util.ArrayList<Attribute> paramDefs)
Set the structure of the parameters that are expected as input by this function.java.lang.String
toString()
java.lang.String
toString(java.lang.String pad)
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Methods inherited from class weka.core.pmml.Function
getFunction, getFunction, getName
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Method Detail
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setParameterDefs
public void setParameterDefs(java.util.ArrayList<Attribute> paramDefs) throws java.lang.Exception
Set the structure of the parameters that are expected as input by this function. This must be called before getOutputDef() is called.- Specified by:
setParameterDefs
in classFunction
- Parameters:
paramDefs
- the structure of the input parameters- Throws:
java.lang.Exception
- if the number or types of parameters are not acceptable by this function
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getParameterNames
public java.lang.String[] getParameterNames()
Returns an array of the names of the parameters expected as input by this function- Specified by:
getParameterNames
in classFunction
- Returns:
- an array of the parameter names
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getOutputDef
public Attribute getOutputDef()
Get the structure of the result produced by this function. Subclasses must implement.- Specified by:
getOutputDef
in classFunction
- Returns:
- the structure of the result produced by this function.
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getResult
public double getResult(double[] incoming) throws java.lang.Exception
Get the result of applying this function.- Specified by:
getResult
in classFunction
- Parameters:
incoming
- the arguments to this function (supplied in order to match that of the parameter definitions- Returns:
- the result of applying this function. When the optype is categorical or ordinal, an index into the values of the output definition is returned.
- Throws:
java.lang.Exception
- if there is a problem computing the result of this function
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