69367997c3
### What changes were proposed in this pull request? There are three changes in this PR: 1. use Summarizer instead of MultivariateOnlineSummarizer in Aggregator test suites (similar to https://github.com/apache/spark/pull/26396) 2. Put common code in ```Summarizer.getRegressionSummarizers``` and ```Summarizer.getClassificationSummarizers```. 3. Move ```MultiClassSummarizer``` from ```LogisticRegression``` to ```ml.stat``` (this seems to be a better place since ```MultiClassSummarizer``` is not only used by ```LogisticRegression``` but also several other classes). ### Why are the changes needed? Minimize code duplication and improve performance ### Does this PR introduce any user-facing change? No ### How was this patch tested? existing test suites. Closes #27555 from huaxingao/spark-30802. Authored-by: Huaxin Gao <huaxing@us.ibm.com> Signed-off-by: Sean Owen <srowen@gmail.com> |
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