org.apache.sysds.runtime.functionobjects

Class CM

java.lang.Object

org.apache.sysds.runtime.functionobjects.FunctionObject

org.apache.sysds.runtime.functionobjects.ValueFunction

org.apache.sysds.runtime.functionobjects.CM

All Implemented Interfaces:

Serializable

public class CM
extends ValueFunction

GENERAL NOTE: * 05/28/2014: We decided to do handle weights consistently to SPSS in an operation-specific manner, i.e., we (1) round instead of casting where required (e.g. count), and (2) consistently use fractional weight values elsewhere. In case a count-base interpretation of weights is needed, just ensure rounding before calling CM/COV/KahanPlus.

See Also:

Serialized Form

Method Summary

Modifier and Type	Method and Description
Data	execute(Data in1, Data in2) Combining stats from two partitions of the data.
Data	execute(Data in1, double in2) Special case for weights w2==1
Data	execute(Data in1, double in2, double w2) General case for arbitrary weights w2
CMOperator.AggregateOperationTypes	getAggOpType()
static CM	getCMFnObject(CMOperator.AggregateOperationTypes type)

Methods inherited from class org.apache.sysds.runtime.functionobjects.ValueFunction

requiresCorrection

Methods inherited from class org.apache.sysds.runtime.functionobjects.FunctionObject

clone, execute, execute, execute, execute, execute, execute, execute, execute, execute

Methods inherited from class java.lang.Object

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

Method Detail

getCMFnObject

public static CM getCMFnObject(CMOperator.AggregateOperationTypes type)

getAggOpType

public CMOperator.AggregateOperationTypes getAggOpType()

execute

public Data execute(Data in1,
                    double in2)

Special case for weights w2==1

Overrides:

execute in class FunctionObject

execute

public Data execute(Data in1,
                    double in2,
                    double w2)

General case for arbitrary weights w2

Overrides:

execute in class FunctionObject

execute

public Data execute(Data in1,
                    Data in2)

Combining stats from two partitions of the data.

Overrides:

execute in class FunctionObject