org.apache.sysds.runtime.compress.cocode

Class CoCodeCost

java.lang.Object

org.apache.sysds.runtime.compress.cocode.AColumnCoCoder

org.apache.sysds.runtime.compress.cocode.CoCodeCost

public class CoCodeCost
extends AColumnCoCoder

Column group partitioning by number of distinct items estimated. This allows us to join columns based on the worst case estimate of the joined sizes. Then once we decide to join, if the worst case is okay, we then analyze the actual cardinality of the join. This method allows us to compress many more columns than the BinPacking

Method Summary

Methods inherited from class java.lang.Object

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