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

    All Methods Instance Methods Abstract Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `int` | `getDimension()` |
    `double[]` | `gradientAt​(double[] x)` |
    `double` | `valueAt​(double[] x)` |

- - ### Method Detail

    - #### getDimension

          int getDimension()

    - #### valueAt

          double valueAt​(double[] x)

    - #### gradientAt

          double[] gradientAt​(double[] x)