Phase Transitions in Approximate Ranking
Phase Transitions in Approximate Ranking
复制标题
近似排名中的阶段转变
DOI:
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发表时间:
2017
期刊:
影响因子:
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通讯作者:
Chao Gao
中科院分区:
文献类型:
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作者:
Chao Gao
We study the problem of approximate ranking from observations of pairwise interactions. The goal is to estimate the underlying ranks of $n$ objects from data through interactions of comparison or collaboration. Under a general framework of approximate ranking models, we characterize the exact optimal statistical error rates of estimating the underlying ranks. We discover important phase transition boundaries of the optimal error rates. Depending on the value of the signal-to-noise ratio (SNR) parameter, the optimal rate, as a function of SNR, is either trivial, polynomial, exponential or zero. The four corresponding regimes thus have completely different error behaviors. To the best of our knowledge, this phenomenon, especially the phase transition between the polynomial and the exponential rates, has not been discovered before.
DOI:
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发表时间:
2018
期刊:
Proceedings of Machine Learning Research
影响因子:
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作者:
Mao, Cheng;Weed, Jonathan;Rigollet, Philippe
通讯作者:
Rigollet, Philippe