edu.stanford.nlp.optimization
Interface Function

All Known Subinterfaces:

DiffFunction

All Known Implementing Classes:

AbstractCachingDiffFunction, AbstractStochasticCachingDiffFunction, AbstractStochasticCachingDiffUpdateFunction, AdaptedGaussianPriorObjectiveFunction, BiasedLogConditionalObjectiveFunction, CRFLogConditionalObjectiveFunction, CRFLogConditionalObjectiveFunctionForLOP, CRFNonLinearLogConditionalObjectiveFunction, CRFNonLinearSecondOrderLogConditionalObjectiveFunction, GeneralizedExpectationObjectiveFunction, LogConditionalObjectiveFunction, ResultStoringMonitor, SemiSupervisedLogConditionalObjectiveFunction

public interface Function

An interface for double-valued functions over double arrays.

Since:

1.0

Author:

Dan Klein

Method Summary

int	domainDimension() Returns the number of dimensions in the function's domain
double	valueAt(double[] x) Returns the value of the function at a single point.

Method Detail

valueAt

double valueAt(double[] x)

Returns the value of the function at a single point.

Parameters:

x - a double[] input

Returns:

the function value at the input

domainDimension

int domainDimension()

Returns the number of dimensions in the function's domain

Returns:

the number of domain dimensions