Package org.elasticsearch.client.ml.dataframe.evaluation.classification

Class AccuracyMetric

java.lang.Object
org.elasticsearch.client.ml.dataframe.evaluation.classification.AccuracyMetric
All Implemented Interfaces:
EvaluationMetric, org.elasticsearch.common.xcontent.ToXContent, org.elasticsearch.common.xcontent.ToXContentObject
public class AccuracyMetric
extends java.lang.Object
implements EvaluationMetric
AccuracyMetric is a metric that answers the following two questions: 1. What is the fraction of documents for which predicted class equals the actual class? equation: overall_accuracy = 1/n * Σ(y == y') where: n = total number of documents y = document's actual class y' = document's predicted class 2. For any given class X, what is the fraction of documents for which either a) both actual and predicted class are equal to X (true positives) or b) both actual and predicted class are not equal to X (true negatives) equation: accuracy(X) = 1/n * (TP(X) + TN(X)) where: X = class being examined n = total number of documents TP(X) = number of true positives wrt X TN(X) = number of true negatives wrt X

  • Nested Class Summary

    Nested Classes
    Modifier and Type Class Description
    static class  AccuracyMetric.Result  

    Nested classes/interfaces inherited from interface org.elasticsearch.common.xcontent.ToXContent

    org.elasticsearch.common.xcontent.ToXContent.DelegatingMapParams, org.elasticsearch.common.xcontent.ToXContent.MapParams, org.elasticsearch.common.xcontent.ToXContent.Params

  • Field Summary

    Fields
    Modifier and Type Field Description
    static java.lang.String NAME  

    Fields inherited from interface org.elasticsearch.common.xcontent.ToXContent

    EMPTY_PARAMS

  • Constructor Summary

    Constructors
    Constructor Description
    AccuracyMetric()  

  • Method Summary

    Modifier and Type Method Description
    boolean equals​(java.lang.Object o)  
    static AccuracyMetric fromXContent​(org.elasticsearch.common.xcontent.XContentParser parser)  
    java.lang.String getName()
    Returns the name of the metric
    int hashCode()  
    org.elasticsearch.common.xcontent.XContentBuilder toXContent​(org.elasticsearch.common.xcontent.XContentBuilder builder, org.elasticsearch.common.xcontent.ToXContent.Params params)  

    Methods inherited from class java.lang.Object

    clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

    Methods inherited from interface org.elasticsearch.common.xcontent.ToXContentObject

    isFragment

  • Field Details

  • Constructor Details

    • AccuracyMetric

      public AccuracyMetric()

  • Method Details

    • fromXContent

      public static AccuracyMetric fromXContent​(org.elasticsearch.common.xcontent.XContentParser parser)

    • getName

      public java.lang.String getName()
      Description copied from interface: EvaluationMetric
      Returns the name of the metric
      Specified by:
      getName in interface EvaluationMetric

    • toXContent

      public org.elasticsearch.common.xcontent.XContentBuilder toXContent​(org.elasticsearch.common.xcontent.XContentBuilder builder, org.elasticsearch.common.xcontent.ToXContent.Params params) throws java.io.IOException
      Specified by:
      toXContent in interface org.elasticsearch.common.xcontent.ToXContent
      Throws:
      java.io.IOException

    • equals

      public boolean equals​(java.lang.Object o)
      Overrides:
      equals in class java.lang.Object

    • hashCode

      public int hashCode()
      Overrides:
      hashCode in class java.lang.Object