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From Otis Gospodnetic <otis_gospodne...@yahoo.com>
Subject Re: Lucene's Mean Average Precision
Date Mon, 05 May 2008 03:38:29 GMT
Hi Dana,

There is no "out of the box" for Lucene, really, especially not when it comes to Analyzers.
For example, look at this post and then the comments: http://blogs.sun.com/searchguy/entry/minion_and_lucene_case_sensitivity

Otis
--
Sematext -- http://sematext.com/ -- Lucene - Solr - Nutch

----- Original Message ----
> From: DanaWhite <philrymek@comcast.net>
> To: java-user@lucene.apache.org
> Sent: Sunday, May 4, 2008 7:28:57 PM
> Subject: Re: Lucene's Mean Average Precision
> 
> 
> I arrived at this MAP by modifying IndexFiles to use a StopAnalyzer and work
> in a way that was acceptable for TReC files.  The SearchFiles was modified
> to use a StopAnalyzer and output data in a trec_eval suitable format. 
> Trec_eval reports about 11% at this setting.
> 
> I am not competing in TReC I am just doing an evaluation of different search
> engines.
> 
> At this point I am not going to add anything to Lucene to get a higher MAP
> because I am trying to get a feel for its "out of the box" performance.
> 
> Dana
> 
> -- 
> View this message in context: 
> http://www.nabble.com/Lucene%27s-Mean-Average-Precision-tp17049412p17052549.html
> Sent from the Lucene - Java Users mailing list archive at Nabble.com.
> 
> 
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