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From Mikhail Khludnev <>
Subject Re: "Contextual" sponsored results with Solr
Date Tue, 27 Jan 2015 19:22:24 GMT
if I get you right it's frequently requested feature, but it requires
really deep hack like

On Tue, Jan 27, 2015 at 9:28 PM, Jorge Luis Betancourt González <> wrote:

> Hi all,
> Recently I got an interesting use case that I'm not sure how to implement,
> the idea is that the client wants a fixed number of documents, let's call
> it N, to appear in the top of the results. Let me explain a little we're
> working with web documents so the idea is too promote the documents that
> match the query of the user from a given domain (wikipedia, for example) to
> the top of the list. So if I apply a a boost using the boost parameter:
> http://localhost:8983/solr/select?q=search&fl=url&boost=map(query($type1query),0,0,1,50)&type1query=host:wikipedia
> I get *all* the documents from the desired host at the top, but there is
> no way of limiting the number of documents from the host that are boosted
> to the top of the result list (which could lead to several pages of content
> from the same host, which is not desired, the idea is to only show N) . I
> was thinking in something like field collapsing/grouping but only for the
> documents that match my $type1query parameter (host:wikipedia) but I don't
> see any way of doing grouping/collapsing on only one group and leave the
> other results untouched.
> I although thought on using 2 groups using group.query=host:wikipedia and
> group.query=-host:wikipedia, but in this case there is no way of
> controlling how much documents each independently group will have.
> In this particular case QueryElevationComponent it's not helping because I
> don't want to map all the posible queries I just want to put the some of
> the results from a certain host in the top of the list, but without
> boosting all the documents from the same host.
> Any thoughts or recommendations on this?
> Thank you,
> Regards,
> ---------------------------------------------------
> XII Aniversario de la creación de la Universidad de las Ciencias
> Informáticas. 12 años de historia junto a Fidel. 12 de diciembre de 2014.

Sincerely yours
Mikhail Khludnev
Principal Engineer,
Grid Dynamics


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