[Corpora-List] Precision and Recall

[Thierry Fontenelle]

Hi Federica,



In Ruslan Mitkov's Oxford Handbook of Computational Linguistics (OUP, 2003), you will find a very good glossary, compiled by Patrick Hanks, which defines these terms as follows:



Precision: The number of correct responses divided by the total number of actual responses.

Recall: The number of correct responses divided by the total number of possibly correct responses.



You will find more details on these concepts in the same book, especially in Chapter 22, written by Lynette Hirschman and Inderjeet Mani entitled "Evaluation" (pp. 416-417).



I hope it helps,



Thierry





Thierry Fontenelle

Microsoft Natural Language Group

thierryf at microsoft.com<mailto:thierryf at microsoft.com>



-----Original Message-----
From: corpora-bounces at uib.no [mailto:corpora-bounces at uib.no] On Behalf Of fb27
Sent: Thursday, April 17, 2008 5:56 PM
To: corpora at uib.no
Subject: [Corpora-List] Precision and Recall



Hi all,



can anyone point me to a reference (possibly classic, or at least well-known)

where I can find definitions of "precision" and "recall" as they are used in

corpus linguistics studies?



Thanks in advance for any leads.



Federica







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