Package opennlp.tools.ml.maxent.quasinewton

Interface Function

All Known Implementing Classes:
NegLogLikelihood, ParallelNegLogLikelihood, QNMinimizer.L2RegFunction
public interface Function
Interface for a function.

  • Method Summary

    Modifier and Type
    Method
    Description
    int
    getDimension()
     
    double[]
    gradientAt(double[] x)
    Computes the gradient for x.
    double
    valueAt(double[] x)
    Computes the function value for x.

  • Method Details

    • getDimension

      int getDimension()
      Returns:
      Retrieves the dimension value.

    • valueAt

      double valueAt(double[] x)
      Computes the function value for x.
      Parameters:
      x - The input vector.
      Returns:
      Returns the computed value for x.

    • gradientAt

      double[] gradientAt(double[] x)
      Computes the gradient for x.
      Parameters:
      x - The input vector.
      Returns:
      Returns the computed gradient for x.