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https://issues.apache.org/jira/browse/SOLR-3145?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13228589#comment-13228589
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Uwe Schindler commented on SOLR-3145:
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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: https://issues.apache.org/jira/browse/SOLR-3145
> 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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