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From "Uwe Schindler (Commented) (JIRA)" <>
Subject [jira] [Commented] (SOLR-3145) Velocity /browse GUI should stick to AND as defaultOperator
Date Tue, 13 Mar 2012 18:58:41 GMT


Uwe Schindler commented on SOLR-3145:

I agree with Jan about "and" is good for some use cases, but only for the case that the user
wants to override scoring and just sort e.g. by date, which is bogus for full text search
engines alltogether. The first thing a full-text search consultat should do to the company
representatives is explaining that explicit sorting is a no-go for most use cases. If the
user wants to influence scoring, he can do that e.g. by adding per-document boost factors
as DocValues field or by multiplying other score factors like geo distance, but never ever
simply sort by distance in geo search (simple example: a "cocktail bar" in 2 miles distance
might be a better result than a bar called "cocktail stripper" in 100 yards for users that
entered "cocktail bar" into their search engine - just as example).
> Velocity /browse GUI should stick to AND as defaultOperator
> -----------------------------------------------------------
>                 Key: SOLR-3145
>                 URL:
>             Project: Solr
>          Issue Type: Improvement
>          Components: web gui
>    Affects Versions: 4.0
>            Reporter: Jan Høydahl
>            Assignee: Jan Høydahl
>             Fix For: 4.0
>         Attachments: SOLR-3145.patch
> After SOLR-1889 was committed, the DisMax "mm" parameter defaults to whatever set in
q.op. Since defaultOperator in schema.xml is OR, this means that DisMax now defaults to OR
(mm=0) instead of the old default (mm=100%). It should stick to AND as before.

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