repicea.math

Interface DerivableMathematicalFunction

All Known Implementing Classes:

AbstractMathematicalFunction, AbstractMathematicalFunctionWrapper, CATDecayFunction, CATExponentialFunction, CompositeLogLikelihood, CopulaExpression, CopulaLibrary.DistanceLinkFunctionCopulaExpression, CopulaLibrary.SimpleCopulaExpression, CopulaLibrary.SimpleLogisticCopulaExpression, ExponentialFunctionWrapper, FGMCompositeLogLikelihood, IndividualLikelihood, IndividualLogLikelihood, LikelihoodGLM, LinearStatisticalExpression, LinkFunction, LogFunctionWrapper, MathildeMortalityPredictor.InternalMathematicalFunction

public interface DerivableMathematicalFunction

This interface returns the first and second derivatives of a mathematical function.

Method Summary

Modifier and Type	Method and Description
Matrix	getGradient() This method returns a vector that contains the first derivatives of the function with respect to its parameters.
Matrix	getHessian() This method returns a matrix that contains the second derivatives of the function with respect to its parameters.

Method Detail

getGradient

Matrix getGradient()

This method returns a vector that contains the first derivatives of the function with respect to its parameters.

Returns:

a Matrix instance

getHessian

Matrix getHessian()

This method returns a matrix that contains the second derivatives of the function with respect to its parameters.

Returns:

a Matrix instance