Github user javanna commented on a diff in the pull request:
https://github.com/apache/lucene-solr/pull/511#discussion_r237392155
--- Diff: lucene/MIGRATE.txt ---
@@ -150,3 +150,11 @@ in order to support ToParent/ToChildBlockJoinQuery.
Normalization is now type-safe, with CharFilterFactory#normalize()
returning a Reader and
TokenFilterFactory#normalize() returning a TokenFilter.
+
+## k1+1 constant factor removed from BM25 similarity numerator
--- End diff --
Sure!
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