Github user selvinsource commented on the pull request:
https://github.com/apache/spark/pull/9057#issuecomment-156852089
@yinxusen
https://github.com/selvinsource/spark-pmml-exporter-validator/tree/logistic_regression_multi_class
I tested both multinomial and bernoulli.
The bernoulli results are good, I used the SPEC Heart dataset.
The multinomial results are not as good, the scores in jpmml differ from
the spark predict, this confirms your worries.
We could start supporting only Bernoulli and throw a
IllegalArgumentException for Multinomial in PMMLModelExportFactory.
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