uk.co.agena.minerva.util.nptgenerator
Class Arithmetic

java.lang.Object
  extended by uk.co.agena.minerva.util.nptgenerator.Function
      extended by uk.co.agena.minerva.util.nptgenerator.Arithmetic

public class Arithmetic
extends Function


Field Summary
protected static double DELTA
           
static java.lang.String displayName
           
static java.lang.String[] parameterDisplayNames
           
 
Fields inherited from class uk.co.agena.minerva.util.nptgenerator.Function
ALLOWED_CHARACTERS, NEWLINE, TAB, VARIANCE_MAP, WEIGHTED_FUNCTIONS
 
Method Summary
static Arithmetic Arithmetic(ExtendedNode extendedNode, java.util.List parents, java.util.List functionParams)
          Will Generate a Arithmetic NPT using the node and its parent nodes.
static double[] Arithmetic(java.util.List ranges, double value)
          calculates the arithmetic variable.
 void calculateProbability(DataSet values)
          This will calculate the arithmetic function and add it to the relevant cell of the npt using the rowMajorParentStateCombIndex.
 java.lang.String getDisplayName()
          Shows the name of the Function subclass as it should be displayed in a GUI etc.
 java.lang.String[] getParameterDisplayNames()
          Shows the name of the parameters of the Function subclass as they should be displayed in a GUI etc.
 void setExactProbabilityOnState(double statevalue)
          This method is added for http://bugzilla.agena.co.uk/show_bug.cgi?id=2309 It will find the state that has the exact state value (hopefully a discrete point, and enter probability value 1 for it.
 java.lang.String toString()
          Returns a String representation of the object.
 
Methods inherited from class uk.co.agena.minerva.util.nptgenerator.Function
calculateFunction, createFunction, evaluateExpressionAsDouble, evaluateExpressionAsObject, generateNPTForNodeWithoutSampling, getDummyWeightedFunctionFromTrueName, getMaximumValueReached, getMinimumValueReached, getSingleColumnNPT, isForceSampling, requiresSampling, resetParserCache, setForceSampling, setMaximumValueReached, setMinimumValueReached, setPossibleMaxOrMinVaule
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Field Detail

DELTA

protected static final double DELTA
See Also:
Constant Field Values

displayName

public static java.lang.String displayName

parameterDisplayNames

public static java.lang.String[] parameterDisplayNames
Method Detail

Arithmetic

public static Arithmetic Arithmetic(ExtendedNode extendedNode,
                                    java.util.List parents,
                                    java.util.List functionParams)
                             throws NPTGeneratorException,
                                    InconsistentEvidenceException
Will Generate a Arithmetic NPT using the node and its parent nodes. Will internal set the NPT into the node, depending on the settings.

Parameters:
ebn -
extendedFunctionNode -
expression -
Returns:
Throws:
NPTGeneratorException
InconsistentEvidenceException

calculateProbability

public void calculateProbability(DataSet values)
                          throws ExtendedBNException,
                                 NPTGeneratorInsufficientStateRangeException,
                                 NPTGeneratorException
This will calculate the arithmetic function and add it to the relevant cell of the npt using the rowMajorParentStateCombIndex.

Specified by:
calculateProbability in class Function
Parameters:
rowMajorParentStateCombIndex -
values -
Throws:
NPTGeneratorException
ExtendedBNException
NPTGeneratorInsufficientStateRangeException

Arithmetic

public static double[] Arithmetic(java.util.List ranges,
                                  double value)
calculates the arithmetic variable.

Parameters:
ranges -
mean -
variance -
Returns:

toString

public java.lang.String toString()
Returns a String representation of the object.

Overrides:
toString in class Function
Parameters:
The - String representation.

getDisplayName

public java.lang.String getDisplayName()
Description copied from class: Function
Shows the name of the Function subclass as it should be displayed in a GUI etc.

Specified by:
getDisplayName in class Function

getParameterDisplayNames

public java.lang.String[] getParameterDisplayNames()
Description copied from class: Function
Shows the name of the parameters of the Function subclass as they should be displayed in a GUI etc.

Specified by:
getParameterDisplayNames in class Function

setExactProbabilityOnState

public void setExactProbabilityOnState(double statevalue)
This method is added for http://bugzilla.agena.co.uk/show_bug.cgi?id=2309 It will find the state that has the exact state value (hopefully a discrete point, and enter probability value 1 for it.

Parameters:
probability -
statevalue -


Copyright © 2006 Agena Ltd. All Rights Reserved.