Update 相关度理论.md

oonexdl · May 22, 2022 · aaa3e62 · aaa3e62
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@@ -158,3 +158,5 @@ Document 3: (happy,hippopotamus)—[2,5]
 ![Query and document vectors](./vector_2.png)
 
 By measuring the angle between the query vector and the document vector, it is possible to assign a relevance score to each document.
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+https://www.elastic.co/guide/en/elasticsearch/guide/current/scoring-theory.html