# Package org.apache.sysds.runtime.compress.estim.encoding

Interface Summary
EncodingFactory
IEncode: This interface covers an intermediate encoding for the samples to improve the efficiency of the joining of sample column groups.

Class Summary
AEncode
ConstEncoding: Const encoding for cases where the entire group of columns is the same value
DenseEncoding: An Encoding that contains a value on each row of the input.
EmptyEncoding: Empty encoding for cases where the entire group of columns is zero
SparseEncoding: A Encoding that contain a default value that is not encoded and every other value is encoded in the map.