Our system needs to calculate the TFs(term frequency) of the result of
search. i.e, we get a set of documents by a "query_string" search, and we
want to get the TF of every document.
As we know, elasticseach provides the inverted index(term---->documents),
but it do produce forward index table(document--->terms) when index a
document. is it possible to get it?
If it is not possible, we have to manually process the search result to get
the documents' TF. It actually is what elasticsearch has done before.
Or any suggestions? thank you.
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