I want to implement a classic query expansion (Rocchio method for example) for
ElasticSearch.
Basically what I need to do is to retrieve the term vectors of the top N
relevant documents given an original query, extract a list of terms based
on some criteria, and finally get enriched document results with a expanded
query. Surely I can do that by searching twice, but is there any better
solution that I can do it IN the ElasticSearch? Do you have any
suggestions about where and how I can implement it?
Thanks!
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