DB Tsai created SPARK-3317:
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Summary: The loss of regularization in Updater should use the
oldWeights
Key: SPARK-3317
URL: https://issues.apache.org/jira/browse/SPARK-3317
Project: Spark
Issue Type: Bug
Components: MLlib
Reporter: DB Tsai
The current loss of the regularization is computed from the newWeights which is
not correct. The loss, R(w) = 1/2 ||w||^2 should be computed with the
oldWeights.
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