Github user WeichenXu123 commented on the issue:
https://github.com/apache/spark/pull/15435
sethah
About this issue:
Why is there a one-to-one overlap between MulticlassClassificationSummary
and LogisticRegressionSummary, and MulticlassLogisticRegressionSummary inherits
from them both?
If I merge the MulticlassLogisticRegressionSummary into
LogisticRegressionSummary to remove the one-to-one overlap between
MulticlassClassificationSummary and LogisticRegressionSummary, it will cause
**more API breaking**, because in this way it will make
BinaryLogisticRegressionTrainingSummary cannot extends
LogisticRegressionTrainingSummary and it will break some other public API such
as `def summary`.
you can try to modify it and compile the code and will find this problem...
Maybe there is some better way but I haven't think out.
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