19 Oct 2004
CS 5244: Library Evaluation
26
P/R: an example
Rank Decision R@r P@r
1 R 10% 100%
2 10% 50%
3 10% 33%
4 R 20% 50%
5 R 30% 60%
6 30% 50%
7 R 40% 57%
8 40% 50%
9 40% 44%
10 40% 40%
11 40% 36%
12 R 50% 42%
13 R 60% 46%
14 R 70% 50%
…
22 R 100% 45%
Recall (%)
Actual Precision
Interpolated Precision
From: Managing Gigabytes