Using Elasticsearch version 7.14.0, I want to find correlations betweet fields in different indices.
An index named "A" has "name", "a-1", "a-2" fields.
An index named "B" has "name", "b-1", "b-2" fields.
The "name" field is the common field for index "A" and "B".
What I want to do is to find the correlation between "a-1" and "b-1" (or "a-2" and "b-2").
Is there any way to find the correlation?