Query regarding scoring of ES8. 2

Elastic Stack Elasticsearch
1

Hi All,

I am trying to upgrade from ES6.3 to ES8.2.
I am new to Elasticsearch and wanted to understand how the scoring is done on text search in both the versions.
scores and the result set is all different when compared in these versions. It would be helpful if I can get any relevant links for both versions to understand the scoring mechanism better.

2

We switched from TF/IDF to BM25 during this time I guess.

3

Thanks for the reply. Could you please share some reference docs if possible.

4

You can read this:

5

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