A geometric interpretation of r-precision and its correlation with average precision

@inproceedings{Aslam2005AGI,
  title={A geometric interpretation of r-precision and its correlation with average precision},
  author={Javed A. Aslam and Emine Yılmaz and Virgil Pavlu},
  booktitle={SIGIR},
  year={2005}
}
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 performance, 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… CONTINUE READING
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