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Posted to reviews@spark.apache.org by GitBox <gi...@apache.org> on 2019/05/29 05:41:04 UTC
[GitHub] [spark] zhengruifeng commented on issue #24727: [SPARK-27867][ML]
RegressionEvaluator cache lastest RegressionMetrics to avoid duplicated
computation
zhengruifeng commented on issue #24727: [SPARK-27867][ML] RegressionEvaluator cache lastest RegressionMetrics to avoid duplicated computation
URL: https://github.com/apache/spark/pull/24727#issuecomment-496792285
@srowen But current `Evaluator` do not expose method to obtain the metrics other that set by `metricName`. If we want two metrics, we have to compute twice.
or we modify `Evaluator` to support `setMetricNames` and return an array?
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