Package io.nosqlbench.virtdata.library.basics.core.stathelpers

Class DiscreteProbabilityBuffer

java.lang.Object
io.nosqlbench.virtdata.library.basics.core.stathelpers.DiscreteProbabilityBuffer
All Implemented Interfaces:
java.lang.Iterable<DiscreteProbabilityBuffer.Entry>
public class DiscreteProbabilityBuffer
extends java.lang.Object
implements java.lang.Iterable<DiscreteProbabilityBuffer.Entry>

  • Nested Class Summary

    Nested Classes
    Modifier and Type Class Description
    static class  DiscreteProbabilityBuffer.Entry  

  • Field Summary

    Fields
    Modifier and Type Field Description
    static int RECORD_LEN  

  • Constructor Summary

    Constructors
    Constructor Description
    DiscreteProbabilityBuffer​(int entries)  

  • Method Summary

    Modifier and Type Method Description
    DiscreteProbabilityBuffer add​(int i, double probability)  
    double getCumulativeProbability()  
    java.util.Iterator<DiscreteProbabilityBuffer.Entry> iterator()  
    void normalize()  
    void normalize​(double phi)
    Normalize the dataset, but only if the cumulative probability is not close to the unit probability of 1.0D, within some phi threshold.

    Methods inherited from class java.lang.Object

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

    Methods inherited from interface java.lang.Iterable

    forEach, spliterator

  • Field Details

    • RECORD_LEN

      public static int RECORD_LEN

  • Constructor Details

    • DiscreteProbabilityBuffer

      public DiscreteProbabilityBuffer​(int entries)

  • Method Details

    • add

      public DiscreteProbabilityBuffer add​(int i, double probability)

    • normalize

      public void normalize​(double phi)
      Normalize the dataset, but only if the cumulative probability is not close to the unit probability of 1.0D, within some phi threshold. In either case, mark the dataset as normalized.
      Parameters:
      phi - A double value, preferably very small, like 0.000000001D

    • normalize

      public void normalize()

    • iterator

      public java.util.Iterator<DiscreteProbabilityBuffer.Entry> iterator()
      Specified by:
      iterator in interface java.lang.Iterable<DiscreteProbabilityBuffer.Entry>

    • getCumulativeProbability

      public double getCumulativeProbability()