org.apache.sysds.runtime.compress.cocode

Class PlanningCoCoder

java.lang.Object

org.apache.sysds.runtime.compress.cocode.PlanningCoCoder

public class PlanningCoCoder
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	PlanningCoCoder.GroupableColInfo
static class	PlanningCoCoder.PartitionerType

Constructor Summary

Constructors

Constructor and Description
PlanningCoCoder()

Method Summary

Modifier and Type	Method and Description
static List<int[]>	findCoCodesByPartitioning(CompressedSizeEstimator sizeEstimator, CompressedSizeInfo colInfos, int numRows, int k, CompressionSettings cs) Main entry point of CoCode.

Methods inherited from class java.lang.Object

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

Constructor Detail

PlanningCoCoder

public PlanningCoCoder()

Method Detail

findCoCodesByPartitioning

public static List<int[]> findCoCodesByPartitioning(CompressedSizeEstimator sizeEstimator,
                                                    CompressedSizeInfo colInfos,
                                                    int numRows,
                                                    int k,
                                                    CompressionSettings cs)

Main entry point of CoCode. This package groups together ColGroups across columns, to improve compression further,

Parameters:

sizeEstimator - The size estimator used for estimating ColGroups potential sizes.

colInfos - The information already gathered on the individual ColGroups of columns.

numRows - The number of rows in the input matrix.

k - The concurrency degree allowed for this operation.

cs - The Compression Settings used in the compression.

Returns:

The Estimated (hopefully) best groups of ColGroups.