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From: Robert Muir <rcmuir@gmail.com>
Date: Tue, 30 Nov 2010 11:00:50 -0500
Message-ID: <AANLkTimr3sPd8UJzq_4TA=7kHmv2Li+MiTJbqAEo-rhs@mail.gmail.com>
Subject: Re: precision and recall in lucene
To: java-user@lucene.apache.org
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On Tue, Nov 30, 2010 at 10:46 AM, Yakob <jacobian@opensuse-id.org> wrote:

> can you tell me what went wrong? what is the difference between
> topicsFile and qrelsFile anyway?
>

well its hard to tell what you are supplying as topics and qrels.
have a look at /src/lia/benchmark in the LIA2 sample code: it has an
example topic and 3 rows in qrels for it.

basically, the topicsFile contains the "queries", and the qrelsFile
contains judgements as to which documents are relevant.

P.S.: once you have an index, a topics, and a qrels file, you can just
use org.apache.lucene.benchmark.quality.trec.QueryDriver (it has a
main method)

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