Package org.apache.sysds.runtime.compress.colgroup

Interface ColGroupUtils

public interface ColGroupUtils

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static class	ColGroupUtils.P

Field Summary

Fields

Modifier and Type	Field	Description
static org.apache.commons.logging.Log	LOG

Method Summary

Static Methods

Modifier and Type	Method	Description
static void	addMatrixToResult(MatrixBlock tmp, MatrixBlock result, IColIndex colIndexes, int rl, int ru)
static boolean	allZero(double[] in)
static double[]	binaryDefRowLeft(BinaryOperator op, double[] v, IColIndex colIndexes)	Calculate the result of performing the binary operation on an empty row to the left v op empty
static double[]	binaryDefRowRight(BinaryOperator op, double[] v, IColIndex colIndexes)	Calculate the result of performing the binary operation on an empty row to the right empty op v
static boolean	containsInfOrNan(double pattern, double[] reference)
static void	copyValuesColGroupMatrixBlocks(AColGroup lhs, AColGroup rhs, MatrixBlock tmpResult, MatrixBlock result)	Copy values from tmpResult into correct positions of result (according to colIndexes in lhs and rhs)
static double[]	createReference(int nCol, double val)
static double[]	extractMostCommonValueInColumns(MatrixBlock mb)
static ColGroupUtils.P[]	getSortedSelection(SparseBlock sb, int rl, int ru)	Get a list of points locations from the SparseBlock.
static void	outerProduct(double[] leftRowSum, double[] rightColumnSum, double[] result, int rl, int ru)
static void	outerProduct(double[] leftRowSum, double[] rightColumnSum, IColIndex colIdxRight, double[] result, int nColR, int rl, int ru)
static void	outerProduct(double[] leftRowSum, SparseBlock rightColSum, IColIndex colIdxRight, double[] result, int nColR, int rl, int ru)
static double	refSum(double[] reference)
static double	refSumSq(double[] reference)
static double[]	reorderDefault(double[] vals, int[] reordering)
static double[]	unaryOperator(UnaryOperator op, double[] reference)

Field Detail

LOG

static final org.apache.commons.logging.Log LOG

Method Detail

binaryDefRowLeft

static double[] binaryDefRowLeft(BinaryOperator op,
                                 double[] v,
                                 IColIndex colIndexes)

Calculate the result of performing the binary operation on an empty row to the left v op empty

Parameters:

op - The operator

v - The values to use on the left side of the operator

colIndexes - The column indexes to extract

Returns:

The result as a double array.

binaryDefRowRight

static double[] binaryDefRowRight(BinaryOperator op,
                                  double[] v,
                                  IColIndex colIndexes)

Calculate the result of performing the binary operation on an empty row to the right empty op v

Parameters:

op - The operator

v - The values to use on the left side of the operator

colIndexes - The column indexes to extract

Returns:

The result as a double array.

copyValuesColGroupMatrixBlocks

static void copyValuesColGroupMatrixBlocks(AColGroup lhs,
                                           AColGroup rhs,
                                           MatrixBlock tmpResult,
                                           MatrixBlock result)

Copy values from tmpResult into correct positions of result (according to colIndexes in lhs and rhs)

Parameters:

lhs - Left ColumnGroup

rhs - Right ColumnGroup

tmpResult - The matrix block to move values from

result - The result matrix block to move values to

extractMostCommonValueInColumns

static double[] extractMostCommonValueInColumns(MatrixBlock mb)

refSum

static double refSum(double[] reference)

refSumSq

static double refSumSq(double[] reference)

allZero

static boolean allZero(double[] in)

containsInfOrNan

static boolean containsInfOrNan(double pattern,
                                double[] reference)

createReference

static double[] createReference(int nCol,
                                double val)

unaryOperator

static double[] unaryOperator(UnaryOperator op,
                              double[] reference)

outerProduct

static void outerProduct(double[] leftRowSum,
                         double[] rightColumnSum,
                         double[] result,
                         int rl,
                         int ru)

outerProduct

static void outerProduct(double[] leftRowSum,
                         double[] rightColumnSum,
                         IColIndex colIdxRight,
                         double[] result,
                         int nColR,
                         int rl,
                         int ru)

outerProduct

static void outerProduct(double[] leftRowSum,
                         SparseBlock rightColSum,
                         IColIndex colIdxRight,
                         double[] result,
                         int nColR,
                         int rl,
                         int ru)

addMatrixToResult

static void addMatrixToResult(MatrixBlock tmp,
                              MatrixBlock result,
                              IColIndex colIndexes,
                              int rl,
                              int ru)

reorderDefault

static double[] reorderDefault(double[] vals,
                               int[] reordering)

getSortedSelection

static ColGroupUtils.P[] getSortedSelection(SparseBlock sb,
                                            int rl,
                                            int ru)

Get a list of points locations from the SparseBlock. This is used to find 1 indexes in a sparse selection matrix. We assume the input only have one non zero per row, and that non zero is a 1.

Parameters:

sb - Sparse block to extract points from

rl - row to start from

ru - row to end at

Returns:

The coordinates that contain values.