com.itemanalysis.psychometrics.optimization

Interface Function

All Known Subinterfaces:

DiffFunction, ItemLogLikelihoodFunction

All Known Implementing Classes:

AbstractDiffFunction, ItemLogLikelihood

public interface Function

An interface for double-valued functions over double arrays.

Since:

1.0

Author:

Dan Klein

Method Summary

Modifier and Type	Method and Description
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