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From Ahmet Arslan <>
Subject Re: Precision, Recall, ROC in solr
Date Wed, 18 May 2016 14:58:03 GMT
Hi Tentri,

Evaluation in IR primary carried out by traditional TREC-style (also referred to as Cranfield
paradigm) evaluation methodology.
The evaluation methodology requires a document collection, a set of information needs (called
topics or queries), and a set of query relevance judgments (qrels) (right answers).

qrels is the most labor expensive since it requires human assessors.

Once you have these three elements, then you can use evaluation scripts such as
to calculate effectiveness metrics (recall, precision, etc).

See for an example :

On Wednesday, May 18, 2016 3:37 PM, Tentri Oktaviani <> wrote:
Hi solr users,

My final task on college is making a search engine. I'm using solr to
access and retrieve data from ontology which later will be used as
corpuses. I'm entirely new to these (information retrieval, ontology,
python and solr) things.

There's a step in information retrieval to evaluate the query result. I'm
planning to use Precision, Recall, and ROC score to evaluate this. Is there
any way I can use function in solr to calculate the score of precision,
recall, and ROC? From solr interface or even the codes behind is doesn't

Thank you in advance.


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