Github user WeichenXu123 commented on the issue:
https://github.com/apache/spark/pull/19565
Yes, it changed the probability of samples indeed compared with current
code.
But according to the comments coming from @jkbradley in #18924 , "in order
to make **corpusSize**, batchSize, and nonEmptyDocsN all refer to the same
filtered corpus", I think @jkbradley 's meaning is to filter out empty docs
before sampling, the relationship should be:
`batchSize = miniBatchFraction * corpusSize` and `batchSize ==
nonEmptyDocsN`
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