Full Text search result scores are different with 3.5.14 Community and 4.2.6 Community

[stephen_hall]

I get significantly different scores for Full Text search results on 3.5.14 Community server vs 4.2.6 Community server. The data in both cases is the same - dumped from one database, and loaded into the other, the indexes are the same, and the queries are the same. I would therefore expect to get the same results and scores. Has something changed in the Full Text result scoring function between these versions?

Sample query:

CALL db.index.fulltext.queryNodes('stories', 'body:enterprises AND date:[20200520 TO 20210520]') YIELD node, score
RETURN node.title, score ORDER BY score DESC LIMIT 10

[anthapu]

3.5.14 and 4.2.6 have different Lucence core, which provides the full text index capability. So, it is possible that scores could be different.

[stephen_hall]

Thanks for confirming - I thought that might be the case.