Package smile.validation.metric

Class Error

java.lang.Object
smile.validation.metric.Error
All Implemented Interfaces:
Serializable, ToDoubleBiFunction<int[],int[]>, ClassificationMetric
public class Error extends Object implements ClassificationMetric
The number of errors in the population.
See Also:

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static final Error
    instance
    Default instance.

  • Constructor Summary

    Constructors
    Constructor
    Description
    Error()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    static int
    of(int[] truth, int[] prediction)
    Calculates the number of errors.
    double
    score(int[] truth, int[] prediction)
    Returns a score to measure the quality of classification.
    String
    toString()
     

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

    Methods inherited from interface smile.validation.metric.ClassificationMetric

    applyAsDouble

  • Field Details

    • instance

      public static final Error instance
      Default instance.

  • Constructor Details

    • Error

      public Error()

  • Method Details

    • score

      public double score(int[] truth, int[] prediction)
      Description copied from interface: ClassificationMetric
      Returns a score to measure the quality of classification.
      Specified by:
      score in interface ClassificationMetric
      Parameters:
      truth - the true class labels.
      prediction - the predicted class labels.
      Returns:
      the metric.

    • of

      public static int of(int[] truth, int[] prediction)
      Calculates the number of errors.
      Parameters:
      truth - the ground truth.
      prediction - the prediction.
      Returns:
      the metric.

    • toString

      public String toString()
      Overrides:
      toString in class Object