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Posted to reviews@spark.apache.org by GitBox <gi...@apache.org> on 2019/04/26 09:18:42 UTC
[GitHub] [spark] shishaochen opened a new pull request #24470:
[SPARK-27577][MLlib] Correct thresholds downsampled in
BinaryClassificationMetrics
shishaochen opened a new pull request #24470: [SPARK-27577][MLlib] Correct thresholds downsampled in BinaryClassificationMetrics
URL: https://github.com/apache/spark/pull/24470
## What changes were proposed in this pull request?
Choose the last record in chunks when calculating metrics with downsampling in BinaryClassificationMetrics.
## How was this patch tested?
A new unit test is added to verify thresholds from downsampled records.
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