OK, I've narrowed it down a bit. I can recreate the behaviour with this (I am
sending to the /query endpoint, not /select). We are sending the selected
checkboxes as filters (fq in /select lingo, I guess).
===
{
"query": "dyr",
"filter": [
"work.subject_docval:(\"uddøde dyr\" \"forhistoriske dyr\")",
"doc_type:work"
],
"fields": "work.workid work.title work.creator work.subject_dbc score",
"offset": 0,
"limit": 100,
"params": {
"defType": "edismax",
"qf": [
"work.creator",
"work.title",
],
"sort": "score desc",
"debug": true
"indent": true
}
}
===
This query has the first book with both those subjects as the 10th result in
the list. If I move that clause from "filter" to "q", the ordering of the
result has books with both subjects at the top of the list.
===
{
"query": "dyr AND work.subject_docval:(\"uddøde dyr\" \"forhistoriske
dyr\")",
"filter": [
"doc_type:work"
],
"fields": "work.workid work.title work.creator work.subject_dbc score",
"offset": 0,
"limit": 100,
"params": {
"defType": "edismax",
"qf": [
"work.creator",
"work.title",
],
"sort": "score desc"
}
}
===
Is that intended behaviour?
--
Noah Torp-Smith ([email protected])
________________________________
Fra: Noah Torp-Smith <[email protected]>
Sendt: 26. august 2022 12:25
Til: [email protected] <[email protected]>
Emne: Sv: Ranking based on number of OR clauses matched
Hi Alex, thanks for responding so quickly.
I guess (but I'll need to verify) the issue is that we boost on some other
things by default. Thigs like how often has stuff been loaned, how many copies
are there in the libraries. That seems to (but again, I'll need to make some
experiments to verify) take priority over how many OR clauses from one of the
fqs that are matched. That makes sense, but I wonder if there is a way to work
around that?
--
Noah Torp-Smith ([email protected])
________________________________
Fra: Alessandro Benedetti <[email protected]>
Sendt: 26. august 2022 11:26
Til: [email protected] <[email protected]>
Emne: Re: Ranking based on number of OR clauses matched
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Hi Noah,
That's pretty much the default if you go with a pure boolean query!
Do you see a different behaviour?
What is your query?
Cheers
On Fri, 26 Aug 2022, 11:22 Noah Torp-Smith, <[email protected]> wrote:
> We have a search engine with books that have topics and other features. We
> do faceting on these features, and allow users to check off topics they are
> interested in, in the UI. If a user checks off more than one topic, we
> retrieve books that have any of the topics checked off, so the search
> becomes disjunctive.
>
> My question is, is there a way to rank books that match more than one
> selected topic higher than books that match only one topic?
>
> Topic is only an example here. Ideally, we would like to do this on
> features that we only have as docValues in solr, so ordering them after
> they are returned by solr would require changes we would like to avoid if
> possible.
>
> I realize this might be a "classical" question but I have not been able to
> formulate a query in google/stackexchange that gave me an answer.
>
> Thanks!
>
> /Noah
>
>
> --
>
> Noah Torp-Smith ([email protected])
>
