Normalizing/Returning solr scores between 0 to 1

[smanad <sm...@gmail.com>]

Hi, 
We have a need where we would want normalized scores from score ranging
between 0 to 1 rather than a free range.
I read about it @ http://wiki.apache.org/lucene-java/ScoresAsPercentages and
seems like thats not something that is recommended. 

However, is there still a way to set some config in solrconfig to make sure
scores are always between 0 to 1?
OR i will have to implement that logic in my code after I get the results
from Solr.

Any pointers will be much appreciated.
Thanks, 
-M



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Re: Normalizing/Returning solr scores between 0 to 1

[Upayavira <uv...@odoko.co.uk>]

And if Solr has to spit it out, perhaps you could do that with a simple
salt transform or velocity template.

Upayavira

On Fri, Jun 28, 2013, at 12:30 AM, Learner wrote:
> Might not be useful but a work around would be to divide all scores by
> max
> score to get scores between 0 and 1.
> 
> 
> 
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> View this message in context:
> http://lucene.472066.n3.nabble.com/Normalizing-Returning-solr-scores-between-0-to-1-tp4073797p4073829.html
> Sent from the Solr - User mailing list archive at Nabble.com.

Re: Normalizing/Returning solr scores between 0 to 1

[Learner <bb...@gmail.com>]

Might not be useful but a work around would be to divide all scores by max
score to get scores between 0 and 1.



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Re: Normalizing/Returning solr scores between 0 to 1

[Kevin Osborn <ke...@cbsi.com>]

There is no way that I am of aware of to have Solr return between 0 and a
1. Perhaps there is some way tom implement a custom Scorer, but that is
overkill and would probably have adverse affects. Instead, just normalize
it in your results. Of course, since you read the link you included, you
realize that it is no longer really a score, but basically just a feel good
measure. And that is what we do, along with some other logic.

-Kevin


On Thu, Jun 27, 2013 at 2:25 PM, smanad <sm...@gmail.com> wrote:

> Hi,
> We have a need where we would want normalized scores from score ranging
> between 0 to 1 rather than a free range.
> I read about it @ http://wiki.apache.org/lucene-java/ScoresAsPercentagesand
> seems like thats not something that is recommended.
>
> However, is there still a way to set some config in solrconfig to make sure
> scores are always between 0 to 1?
> OR i will have to implement that logic in my code after I get the results
> from Solr.
>
> Any pointers will be much appreciated.
> Thanks,
> -M
>
>
>
> --
> View this message in context:
> http://lucene.472066.n3.nabble.com/Normalizing-Returning-solr-scores-between-0-to-1-tp4073797.html
> Sent from the Solr - User mailing list archive at Nabble.com.
>



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