org.apache.sysds.runtime.compress.colgroup

Class ColGroupCompressed

java.lang.Object

org.apache.sysds.runtime.compress.colgroup.AColGroup

org.apache.sysds.runtime.compress.colgroup.ColGroupCompressed

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

ColGroupEmpty, ColGroupValue

public abstract class ColGroupCompressed
extends AColGroup

Base class for column groups encoded Encoded in a compressed manner.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.sysds.runtime.compress.colgroup.AColGroup

AColGroup.CompressionType

Method Summary

Modifier and Type	Method and Description
abstract void	addMinMax(double[] ret)
long	estimateInMemorySize() Get the upper bound estimate of in memory allocation for the column group.
double	getMax() Short hand method for getting maximum value contained in this column group.
double	getMin() Short hand method for getting minimum value contained in this column group.
int	getNumRows() Get number of rows contained in the ColGroup.
abstract double[]	getValues() Get all the values in the colGroup.
abstract boolean	isLossy() Is Lossy
String	toString()
void	unaryAggregateOperations(AggregateUnaryOperator op, double[] c) Unary Aggregate operator, since aggregate operators require new object output, the output becomes an uncompressed matrix.
void	unaryAggregateOperations(AggregateUnaryOperator op, double[] c, int rl, int ru) Unary Aggregate operator, since aggregate operators require new object output, the output becomes an uncompressed matrix.

Methods inherited from class org.apache.sysds.runtime.compress.colgroup.AColGroup

binaryRowOp, containsValue, copy, countNonZerosPerRow, decompressColumnToBlockUnSafe, decompressToBlockSafe, decompressToBlockUnSafe, decompressToBlockUnSafe, get, getColIndices, getCompType, getExactSizeOnDisk, getNumberNonZeros, getNumCols, getNumValues, getValuesAsBlock, isDense, leftMultByAColGroup, leftMultByMatrix, leftMultByMatrix, readFields, replace, rightMultByMatrix, scalarOperation, shiftColIndices, sliceColumn, sliceColumns, tsmm, tsmm, write

Methods inherited from class java.lang.Object

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

Method Detail

getValues

public abstract double[] getValues()

Description copied from class: AColGroup

Get all the values in the colGroup. Note that this is only the stored values not the way they are stored. Making the output a list of values used in that colGroup not the actual full column.

Specified by:

getValues in class AColGroup

Returns:

a double list of values.

addMinMax

public abstract void addMinMax(double[] ret)

isLossy

public abstract boolean isLossy()

Description copied from class: AColGroup

Is Lossy

Specified by:

isLossy in class AColGroup

Returns:

returns if the ColGroup is compressed in a lossy manner.

getMin

public final double getMin()

Description copied from class: AColGroup

Short hand method for getting minimum value contained in this column group.

Specified by:

getMin in class AColGroup

Returns:

The minimum value contained in this ColumnGroup

getMax

public final double getMax()

Description copied from class: AColGroup

Short hand method for getting maximum value contained in this column group.

Specified by:

getMax in class AColGroup

Returns:

The maximum value contained in this ColumnGroup

unaryAggregateOperations

public final void unaryAggregateOperations(AggregateUnaryOperator op,
                                           double[] c)

Description copied from class: AColGroup

Unary Aggregate operator, since aggregate operators require new object output, the output becomes an uncompressed matrix.

Specified by:

unaryAggregateOperations in class AColGroup

Parameters:

op - The operator used

c - Rhe output matrix block.

unaryAggregateOperations

public final void unaryAggregateOperations(AggregateUnaryOperator op,
                                           double[] c,
                                           int rl,
                                           int ru)

Description copied from class: AColGroup

Unary Aggregate operator, since aggregate operators require new object output, the output becomes an uncompressed matrix.

Specified by:

unaryAggregateOperations in class AColGroup

Parameters:

op - The operator used

c - The output matrix block.

rl - The Starting Row to do aggregation from

ru - The last Row to do aggregation to (not included)

toString

public String toString()

Overrides:

toString in class AColGroup

getNumRows

public final int getNumRows()

Description copied from class: AColGroup

Get number of rows contained in the ColGroup.

Specified by:

getNumRows in class AColGroup

Returns:

An integer that is the number of rows.

estimateInMemorySize

public long estimateInMemorySize()

Description copied from class: AColGroup

Get the upper bound estimate of in memory allocation for the column group.

Overrides:

estimateInMemorySize in class AColGroup

Returns:

an upper bound on the number of bytes used to store this ColGroup in memory.