org.apache.datasketches.hive.kll

Class GetCdfUDF

java.lang.Object

org.apache.hadoop.hive.ql.exec.UDF

org.apache.datasketches.hive.kll.GetCdfUDF

public class GetCdfUDF
extends org.apache.hadoop.hive.ql.exec.UDF

Constructor Summary

Constructors

Constructor and Description
GetCdfUDF()

Method Summary

Modifier and Type	Method and Description
List<Double>	evaluate(org.apache.hadoop.io.BytesWritable serializedSketch, Boolean inclusive, Float... splitPoints) Returns a list of ranks (CDF) from a given sketch.
List<Double>	evaluate(org.apache.hadoop.io.BytesWritable serializedSketch, Float... splitPoints) Returns a list of ranks (CDF) from a given sketch.

Methods inherited from class org.apache.hadoop.hive.ql.exec.UDF

getRequiredFiles, getRequiredJars, getResolver, setResolver

Methods inherited from class java.lang.Object

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

Constructor Detail

GetCdfUDF

public GetCdfUDF()

Method Detail

evaluate

public List<Double> evaluate(org.apache.hadoop.io.BytesWritable serializedSketch,
                             Float... splitPoints)

Returns a list of ranks (CDF) from a given sketch. Equivalent to calling GetCDF(sketch, true, splitPoints...)

Parameters:

serializedSketch - serialized sketch

splitPoints - list of unique and monotonically increasing values

Returns:

list of fractions from 0 to 1

evaluate

public List<Double> evaluate(org.apache.hadoop.io.BytesWritable serializedSketch,
                             Boolean inclusive,
                             Float... splitPoints)

Returns a list of ranks (CDF) from a given sketch. Equivalent to calling GetCDF(sketch, true, splitPoints...)

Parameters:

serializedSketch - serialized sketch

inclusive - if true, the interval is inclusive of the left split point and exclusive of the right split point

splitPoints - list of unique and monotonically increasing values

Returns:

list of fractions from 0 to 1