Home

About

Advanced Search

Browse by Discipline

Scientific Societies

E-print Alerts

Add E-prints

E-print Network
FAQHELPSITE MAPCONTACT US


  Advanced Search  

 
A Geometric Interpretation of R-precision and Its Correlation with Average Precision
 

Summary: A Geometric Interpretation of R-precision
and Its Correlation with Average Precision
Javed A. Aslam
, Emine Yilmaz, Virgiliu Pavlu
College of Computer and Information Science
Northeastern University
360 Huntington Ave, #202 WVH
Boston, MA 02115
{jaa,emine,vip}@ccs.neu.edu
ABSTRACT
We consider two of the most commonly cited measures of
retrieval performance: average precision and R-precision. It
is well known that average precision and R-precision are
highly correlated and similarly robust measures of perfor-
mance, though the reasons for this are not entirely clear.
In this paper, we give a geometric argument which shows
that under a very reasonable set of assumptions, average
precision and R-precision both approximate the area under
the precision-recall curve, thus explaining their high corre-
lation. We further demonstrate through the use of TREC

  

Source: Aslam, Javed - College of Computer Science, Northeastern University

 

Collections: Computer Technologies and Information Sciences