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Table 3 Scores assigned for two hypothetical rankings with 31 retrieved images

From: Findings on ranking evaluation functions for feature weighting in image retrieval

Ranking F1 F2 F3 F4 F5 F6 F7 F8 F9 F10
First 0.065 -23 2.03 0.104 0.688 9.338 2.982 10.599 10.86 0.532
Second 0.667 5 2.777 0.171 0.556 9.339 4.409 12.389 13.379 0.583
  1. The first ranking is composed of a relevant image in the first position and another relevant image in the last position with other positions occupied by non-relevant images. The second ranking is composed of two relevant images in the second and third positions with the other retrieved images being non-relevant.