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From "Jack Krupansky" <j...@basetechnology.com>
Subject Re: Fuzzy searching documents over multiple fields using Solr
Date Thu, 09 May 2013 17:34:14 GMT
You can use function queries to boost documents as well. Sorry, but it can 
get messy to figure out.

See:
http://wiki.apache.org/solr/FunctionQuery

See also the edismax "bf" parameter:
http://wiki.apache.org/solr/ExtendedDisMax#bf_.28Boost_Function.2C_additive.29

-- Jack Krupansky

-----Original Message----- 
From: Geert-Jan Brits
Sent: Thursday, May 09, 2013 12:32 PM
To: solr-user@lucene.apache.org
Subject: Re: Fuzzy searching documents over multiple fields using Solr

I didn't mention it but I'd like individual fields to contribute to the
overall score on a continuum instead of 1 (match) and 0 (no match), which
will lead to more fine-grained scoring.

A contrived example: all other things equal a tv of 40 inch should score
higher than a 38 inch tv when searching for a 42 inch tv.
This based on some distance modeling on the 'size' -field. (eg:
score(42,40) = 0.6 and score(42,38) = 0,4).
Other qualitative fields may be modeled in the same way: (e.g: restaurants
with field 'price' with values: 'budget','mid-range', 'expensive', ...)

Any way to incorporate this?



2013/5/9 Jack Krupansky <jack@basetechnology.com>

> A simple "OR" boolean query will boost documents that have more matches.
> You can also selectively boost individual OR terms to control importance.
> And do and "AND" for the required terms, like "tv".
>
> -- Jack Krupansky
> -----Original Message----- From: britske
> Sent: Thursday, May 09, 2013 11:21 AM
> To: solr-user@lucene.apache.org
> Subject: Fuzzy searching documents over multiple fields using Solr
>
>
> Not sure if this has ever come up (or perhaps even implemented without me
> knowing) , but I'm interested in doing Fuzzy search over multiple fields
> using Solr.
>
> What I mean is the ability to returns documents based on some 'distance
> calculation' without documents having to match 100% to the query.
>
> Usecase: a user is searching for a tv with a couple of filters selected. 
> No
> tv matches all filters. How to come up with a bunch of suggestions that
> match the selected filters as closely as possible? The hard part is to
> determine what 'closely' means in this context, etc.
>
> This relates to (approximate) nearest neighbor, Kd-trees, etc. Has anyone
> ever tried to do something similar? any plugins, etc? or reasons
> Solr/Lucene
> would/wouldn't be the correct system to build on?
>
> Thanks
>
>
>
> --
> View this message in context: http://lucene.472066.n3.**
> nabble.com/Fuzzy-searching-**documents-over-multiple-**
> fields-using-Solr-tp4061867.**html<http://lucene.472066.n3.nabble.com/Fuzzy-searching-documents-over-multiple-fields-using-Solr-tp4061867.html>
> Sent from the Solr - User mailing list archive at Nabble.com.
> 


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