RowClassMeet (SystemML 0.15.0 API)

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Summary:
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Field |
Constr |
Method

Detail:
Field |
Constr |
Method

java.lang.Object
- org.apache.sysml.udf.PackageFunction
- - org.apache.sysml.udf.lib.RowClassMeet

All Implemented Interfaces:

Serializable
```
public class RowClassMeet
extends PackageFunction
```
Performs following operation: # Computes the intersection ("meet") of equivalence classes for # each row of A and B, excluding 0-valued cells. # INPUT: # A, B = matrices whose rows contain that row's class labels; # for each i, rows A [i, ] and B [i, ] define two # equivalence relations on some of the columns, which # we want to intersect # A [i, j] == A [i, k] != 0 if and only if (j ~ k) as defined # by row A [i, ]; # A [i, j] == 0 means that j is excluded by A [i, ] # B [i, j] is analogous # NOTE 1: Either nrow(A) == nrow(B), or exactly one of A or B # has one row that "applies" to each row of the other matrix. # NOTE 2: If ncol(A) != ncol(B), we pad extra 0-columns up to # max (ncol(A), ncol(B)). # OUTPUT: # Both C and N have the same size as (the max of) A and B. # C = matrix whose rows contain class labels that represent # the intersection (coarsest common refinement) of the # corresponding rows of A and B. # C [i, j] == C [i, k] != 0 if and only if (j ~ k) as defined # by both A [i, ] and B [j, ] # C [i, j] == 0 if and only if A [i, j] == 0 or B [i, j] == 0 # Additionally, we guarantee that non-0 labels in C [i, ] # will be integers from 1 to max (C [i, ]) without gaps. # For A and B the labels can be arbitrary. # N = matrix with class-size information for C-cells # N [i, j] = count of {C [i, k] | C [i, j] == C [i, k] != 0}

See Also:

Serialized Form

Nested Class Summary

Nested Classes
Modifier and Type Class and Description

class RowClassMeet.ClassLabelComparator

class RowClassMeet.ClassLabels

Constructor Summary

Constructors
Constructor and Description

RowClassMeet()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`execute()` Method that will be executed to perform this function.
`FunctionParameter`	`getFunctionOutput(int pos)` Method to get a specific output of this package function.
`int`	`getNumFunctionOutputs()` Method to get the number of outputs of this package function.

Methods inherited from class org.apache.sysml.udf.PackageFunction
createOutputFilePathAndName, getBaseDir, getConfiguration, getFunctionInput, getNumFunctionInputs, setBaseDir, setConfiguration, setInput, setNumFunctionInputs

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - RowClassMeet
```
public RowClassMeet()
```
- Method Detail
  - getNumFunctionOutputs
```
public int getNumFunctionOutputs()
```
    Description copied from class: PackageFunction
    
    Method to get the number of outputs of this package function. This method should be implemented in the user's function.
    
    Specified by:
    
    getNumFunctionOutputs in class PackageFunction
    
    Returns:
    
    number of outputs
  - getFunctionOutput
```
public FunctionParameter getFunctionOutput(int pos)
```
    Description copied from class: PackageFunction
    
    Method to get a specific output of this package function. This method should be implemented in the user's function.
    
    Specified by:
    
    getFunctionOutput in class PackageFunction
    
    Parameters:
    
    pos - function position
    
    Returns:
    
    function parameter
  - execute
```
public void execute()
```
    Description copied from class: PackageFunction
    
    Method that will be executed to perform this function.
    
    Specified by:
    
    execute in class PackageFunction