opennlp.maxent.quasinewton
Interface DifferentiableFunction

All Superinterfaces:

Function

All Known Implementing Classes:

LogLikelihoodFunction

public interface DifferentiableFunction
extends Function

interface for a function that can be differentiated once.

Method Summary

double[]

gradientAt(double[] x)

Methods inherited from interface opennlp.maxent.quasinewton.Function

getDomainDimension, valueAt

Method Detail

gradientAt

double[] gradientAt(double[] x)