Github user Yunni commented on the issue:
https://github.com/apache/spark/pull/15148
@sethah I think you are right. OR-amplification is only applied inside NN
search and similarity join through `hashDistance` and `explode`. `transform`
itself does not apply amplifications.
Sorry to miss this. I will clarify this in the user guide, and I am happy
for the PR you send to fix the documentation. @jkbradley @MLnick
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