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From Donna L Gresh <>
Subject Re: Testing Precision and Recall on Lucene
Date Thu, 15 Jan 2009 11:22:36 GMT
I don't think this question makes a whole lot of sense in isolation-- 
precision and recall is all about the *query* and that is the art of the 
developer; what is the appropriate query for your particular application. 
Lucene does just great telling you which documents had which terms and 
which term combinations, and does a very good job of scoring them and 
ranking them once you give a query. But *you* have to decide what the 
appropriate query is for your application. The simplest approach, and 
perhaps what you are looking for, is the MoreLikeThis query generator, 
which uses (pretty good) heuristics for telling you which documents are 
"like" a given document, but I don't know if that's the direction you are 
looking for.

david muchangi <> wrote on 01/14/2009 02:00:33 PM:

> Dear All, 
> I wish to have a quick test on how lucene performs in terms of 
> precision and recall.Anyone with a small application that I can use 
> quickly without having to program using the APIs?
> Thanks.
> David
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