IFrameOfReferenceGroup (Apache SystemDS 3.2.0 API)

All Known Implementing Classes:

ColGroupDDCFOR, ColGroupSDCFOR
```
public interface IFrameOfReferenceGroup
```
Interface for frame of reference groups.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`AColGroup`	`extractCommon(double[] constV)`	extract common value from group and return non morphing group

- Method Detail
  - extractCommon
```
AColGroup extractCommon(double[] constV)
```
    extract common value from group and return non morphing group
    
    Parameters:
    
    constV - a vector to contain all values, note length = nCols in total matrix.
    
    Returns:
    
    A non morphing column group with decompression instructions.