Is the elasticsearch relevance score an ordinal or interval value?

Question

In other words, is the difference between scores of 0.7 and 0.8 the same as the difference between scores of 0.5 and 0.6? Or is the 0.1 difference meaningless, not a measure of anything?

score -1 · Answer 1 · answered Dec 01 '15 at 15:30

-1

My guess: it's an ordinal data and it depends on the type of query

Have a look at the theory behind relevance: https://www.elastic.co/guide/en/elasticsearch/guide/current/scoring-theory.html

answered Dec 01 '15 at 15:30

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I am working on that guess as well, but I'd like to find out for certain. – Ollie Glass Dec 01 '15 at 15:37
Also, scores are normalized per query. So if you were planning to compare scores across queries, read this first: http://wiki.apache.org/lucene-java/ScoresAsPercentages – Peter Dixon-Moses Dec 07 '15 at 18:50

Is the elasticsearch relevance score an ordinal or interval value?

1 Answers1