A similarity measure for indefinite rankings

@article{Webber2010ASM,
  title={A similarity measure for indefinite rankings},
  author={William Webber and Alistair Moffat and Justin Zobel},
  journal={ACM Trans. Inf. Syst.},
  year={2010},
  volume={28},
  pages={20:1-20:38}
}
Ranked lists are encountered in research and daily life and it is often of interest to compare these lists even when they are incomplete or have only some members in common. An example is document rankings returned for the same query by different search engines. A measure of the similarity between incomplete rankings should handle nonconjointness, weight high ranks more heavily than low, and be monotonic with increasing depth of evaluation; but no measure satisfying all these criteria currently… 
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