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Measuring precision and recall in lucene to compare two sets of results

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jakedsouza88 at gmail

May 6, 2012, 6:38 PM

Post #1 of 2 (225 views)
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Measuring precision and recall in lucene to compare two sets of results

Hi,

I am facing the following problem

For a given set of queries i retrieve the top n results . Then I make some
changes to the index and then retrieve the top n results for the new index
.
Is there any way to measure or quantify the quality of the new results as
compared to the first set of results ?

Regards,
Jake

zpvie at yahoo

May 7, 2012, 8:10 AM

Post #2 of 2 (219 views)
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Re: Measuring precision and recall in lucene to compare two sets of results [In reply to]

Hi,

You can use kendall's tau. An article titled Comparing top k lists by Ronald
Fagin, Ravi Kumar and D. Sivakumar explaines different methods.

Best Regards,
ZP

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