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From Eric Kurzenberger <Er...@mitchells.com>
Subject Re: Conditions with multiple boosts in bf exists query
Date Fri, 08 Sep 2017 12:43:25 GMT
Thanks for the response, Erick.  Unfortunately, no, these scores aren’t known at index time:
they’re specific to the user doing the search, and they can change.

Cheers,

Eric

On 9/7/17, 7:58 PM, "Erick Erickson" <erickerickson@gmail.com> wrote:

    I'd sidestep the problem ;)....
    
    Are these scores
    1> known at index time
    2> unchanging (at least until the doc is re-indexed)?
    
    If so, pre-compute your boost and put it in the doc at index time.
    
    The other thing you can do is use payloads to add a float to specific
    tokens and incorporate them in at scoring time. See the Solr
    documentation, if you have a relatively recent one the payload support
    has been built in to Solr, otherwise here's a primer:
    https://lucidworks.com/2014/06/13/end-to-end-payload-example-in-solr/
    
    Best,
    Erick
    
    On Thu, Sep 7, 2017 at 8:40 AM, Eric Kurzenberger <EricK@mitchells.com> wrote:
    > I need to do a bf exists query that matches the following conditions:
    >
    >
    > -          IF a_score = 1 AND b_score = 2 THEN boost 30
    >
    > -          IF a_score = 3 AND b_score = 4 THEN boost 20
    >
    > So far, the bf portion of my query looks like this:
    >
    >     if(exists(query({!v="a_score_is:1"})),30,0)
    >
    > But I’m having difficulty finding the correct syntax for the multiple conditions
and boosts.
    >
    > I was originally doing a bq query that looked like this:
    >
    >     bq=(a_score_is:1 AND b_score_is:2)^30 OR (a_score_is:3 AND b_score_is:4)^20
    >
    > but I found that idf was skewing my rexpected esults, as I don’t care about document
frequency.
    >
    > Can anyone assist?
    >
    > Cheers,
    >
    > Eric
    >
    

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