org.apache.drill.exec.expr.fn.impl

Class StringDistanceFunctions.JaccardDistanceFunction

java.lang.Object

org.apache.drill.exec.expr.fn.impl.StringDistanceFunctions.JaccardDistanceFunction

All Implemented Interfaces:

DrillFunc, DrillSimpleFunc

Enclosing class:

StringDistanceFunctions

public static class StringDistanceFunctions.JaccardDistanceFunction
extends Object
implements DrillSimpleFunc

Measures the Jaccard distance of two sets of character sequence. Jaccard distance is the dissimilarity between two sets. It is the complementary of Jaccard similarity.

For further explanation about Jaccard Distance, refer https://en.wikipedia.org/wiki/Jaccard_index

Usage: SELECT jaccard_distance( string1, string2 ) FROM ...

Constructor Summary

Constructors

Constructor and Description
JaccardDistanceFunction()

Method Summary

Modifier and Type	Method and Description
void	eval()
void	setup()

Methods inherited from class java.lang.Object

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

Constructor Detail

JaccardDistanceFunction

public JaccardDistanceFunction()

Method Detail

setup

public void setup()

Specified by:

setup in interface DrillSimpleFunc

eval

public void eval()

Specified by:

eval in interface DrillSimpleFunc