A Hyper-surface Arrangement Model of Ranking Distributions
A Hyper-surface Arrangement Model of Ranking Distributions
复制标题
排名分布的超曲面排列模型
DOI:
10.1145/3447548.3467253
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Watanabe Yohsuke
中科院分区:
文献类型:
--
作者:
Kaji Shizuo;Horiguchi Akira;Abe Takuro;Watanabe Yohsuke
A distribution on the permutations over a fixed finite set is called a ranking distribution. Modelling ranking distributions is one of the major topics in preference learning as such distributions appear as the ranking data produced by many judges. In this paper, we propose a geometric model for ranking distributions. Our idea is to use hyper-surface arrangements in a metric space as the representation space, where each component cut out by hyper-surfaces corresponds to a total ordering, and its volume is proportional to the probability. In this setting, the union of components corresponds to a partial ordering and its probability is also estimated by the volume. Similarly, the probability of a partial ordering conditioned by another partial ordering is estimated by the ratio of volumes. We provide a simple iterative algorithm to fit our model to a given dataset. We show our model can represent the distribution of a real-world dataset faithfully and can be used for prediction and visualisation purposes.
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DOI:
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1977
期刊:
Journal of Combinatorial Theory
影响因子:
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期刊:
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DOI:
10.1007/11871842_53
发表时间:
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期刊:
J. Comb. Theory, Ser. A
影响因子:
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