Package opennlp.tools.ml.maxent.quasinewton

Class QNMinimizer.L2RegFunction

java.lang.Object
opennlp.tools.ml.maxent.quasinewton.QNMinimizer.L2RegFunction
All Implemented Interfaces:
Function
Enclosing class:
QNMinimizer
public static class QNMinimizer.L2RegFunction extends Object implements Function
L2-regularized objective Function.

  • Constructor Details

    • L2RegFunction

      public L2RegFunction(Function f, double l2Cost)

  • Method Details

    • getDimension

      public int getDimension()
      Specified by:
      getDimension in interface Function
      Returns:
      Retrieves the dimension value.

    • valueAt

      public double valueAt(double[] x)
      Description copied from interface: Function
      Computes the function value for x.
      Specified by:
      valueAt in interface Function
      Parameters:
      x - The input vector.
      Returns:
      Returns the computed value for x.

    • gradientAt

      public double[] gradientAt(double[] x)
      Description copied from interface: Function
      Computes the gradient for x.
      Specified by:
      gradientAt in interface Function
      Parameters:
      x - The input vector.
      Returns:
      Returns the computed gradient for x.