tobiasrieger opened a new pull request #1131:
URL: https://github.com/apache/systemds/pull/1131


   This PR includes the closed PR #1113 and all changes proposed in its 
comments. It was rebased on master and consolidated to make it easier to merge
   
   Changes list:
   - Added four new federated data partitioning schemes
        - ShuffleFederatedScheme
        - SubsampleToMinFederatedScheme
        - BalanceToAvgFederatedScheme
        - ReplicateToMaxFederatedScheme
   - Added runtime balancing parameter to parameter server (has a default 
parameter and is optional for the federated case)
   - Different runtime balancing schemes
        - RUN_MIN
        - CYCLE_AVG
        - CYCLE_MAX
   - Simplified the federated control thread to accommodate the coming N-batch 
frequency
        - There is now only one UDF, which computes a given number of batches. 
If more batches than the local epoch are specified it will cycle. This one 
function is sufficient for batch, N-Batch or Epoch Frequencies.
   - Provided a convenient way to create federated test matrices in the 
Automated Test Base
   - .getFedMapping() of FederationMap was refactored to getFRangeFDataMap to 
avoid confusion with the method of MatrixObject with the same name.
   - Updated and improved CNN.dml and TwoNN.dml scripts
   


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