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From Ahmet Arslan <iori...@yahoo.com>
Subject Re: Search Score percentage, Should not be relative to the highest score
Date Mon, 03 Jan 2011 08:43:03 GMT

It is somehow not recommended to convert scores to percentages.
http://wiki.apache.org/lucene-java/ScoresAsPercentages  


> When using lucene to search documents, the results have a
> score based on their relativity to the search term. Inside
> lucene, the score 
> percentage is calculated as a percentage of the maximum
> score achieved.
> 
> Assume we are searching for Amr ElAdawy
> 
> We get results like the following along with the score:
> Omar ElAdawy --> 1.6
> Amro ElAdawy --> 1.9
> Amir Adawi --> 1.3
> 
> 
> With no exact match. Then the percentage will be calculated
> relative to the
> highest score ( despite the fact that it is not exact
> match). So the
> percentage will be:
> 
> Omar ElAdawy --> 84.21%
> Amro ElAdawy --> 100%
> Amir Adawi --> 68.42%
> 
> 
> I need to change that, so the percentage will be relative
> to the exact match
> score. And will be something like that (assuming the
> Matching result score
> is 3):
> 
> Omar ElAdawy --> 53.33%
> Amro ElAdawy --> 63.33%
> Amir Adawi --> 43.33%
> 
> 
> using lucene 2.9.4
> 
> Regards,
> Amr ElAdawy
> 
> 
> 
> 
> -- 
> View this message in context: http://lucene.472066.n3.nabble.com/Search-Score-percentage-Should-not-be-relative-to-the-highest-score-tp2183420p2183420.html
> Sent from the Lucene - Java Users mailing list archive at
> Nabble.com.
> 
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