## Uses of Class
org.apache.sysds.runtime.compress.colgroup.AColGroupCompressed

Packages that use AColGroupCompressed
org.apache.sysds.runtime.compress.colgroup

### Uses of AColGroupCompressed in org.apache.sysds.runtime.compress.colgroup

Subclasses of AColGroupCompressed in org.apache.sysds.runtime.compress.colgroup
`class` `AColGroupOffset` Base class for column groups encoded with various types of bitmap encoding.
`class` `AColGroupValue` Base class for column groups encoded with value dictionary.
`class` `AMorphingMMColGroup` Abstract class for column group types that do not perform matrix Multiplication, and decompression for performance reasons but instead transforms into another type of column group type to perform that operation.
`class` `APreAgg` Abstract class for all the column groups that use preAggregation for Left matrix multiplications.
`class` `ASDCZero`
`class` `ColGroupConst`
`class` `ColGroupDDC` Class to encapsulate information about a column group that is encoded with dense dictionary encoding (DDC).
`class` `ColGroupDDCFOR` Class to encapsulate information about a column group that is encoded with dense dictionary encoding (DDC).
`class` `ColGroupDeltaDDC` Class to encapsulate information about a column group that is first delta encoded then encoded with dense dictionary encoding (DeltaDDC).
`class` `ColGroupEmpty`
`class` `ColGroupOLE` Class to encapsulate information about a column group that is encoded with simple lists of offsets for each set of distinct values.
`class` `ColGroupRLE` A group of columns compressed with a single run-length encoded bitmap.
`class` `ColGroupSDC` Column group that sparsely encodes the dictionary values.
`class` `ColGroupSDCFOR` ColGroup for Patched Frame Of Reference.
`class` `ColGroupSDCSingle` Column group that sparsely encodes the dictionary values.
`class` `ColGroupSDCSingleZeros` Column group that sparsely encodes the dictionary values.
`class` `ColGroupSDCZeros` Column group that sparsely encodes the dictionary values.

Methods in org.apache.sysds.runtime.compress.colgroup with parameters of type AColGroupCompressed
`boolean` ColGroupDDC.`sameIndexStructure​(AColGroupCompressed that)`
`boolean` ColGroupSDCSingleZeros.`sameIndexStructure​(AColGroupCompressed that)`
`boolean` ColGroupSDCZeros.`sameIndexStructure​(AColGroupCompressed that)`