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arXiv 1602.00877cs.ITcs.SImath.ITstat.ML
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稀疏随机块模型的部分恢复界

Partial Recovery Bounds for the Sparse Stochastic Block Model

Jonathan Scarlett, Volkan Cevher

摘要:

本文研究了对称两社区随机块模型中社区发现的信息论极限,社区内和社区间的边缘概率分别为$\frac{a}{n}$和$\frac{b}{n}$.我们考虑稀疏设置,其中$a$和$b$不随$n$扩展,并提供平均恢复的社区标签比例的上限和下限。我们提供了一个数值例子,其中的界限是接近匹配的适度值的$a - b$,并在极限匹配的$a-b$增长大。

英文摘要:

In this paper, we study the information-theoretic limits of community detection in the symmetric two-community stochastic block model, with intra-community and inter-community edge probabilities $\frac{a}{n}$ and $\frac{b}{n}$ respectively. We consider the sparse setting, in which $a$ and $b$ do not scale with $n$, and provide upper and lower bounds on the proportion of community labels recovered on average. We provide a numerical example for which the bounds are near-matching for moderate values of $a - b$, and matching in the limit as $a-b$ grows large.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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