Planted团问题的并行回火
Parallel Tempering for the planted clique problem
摘要：
种植集团问题的理论信息阈值是$2\log_2(N)$，然而，没有已知的多项式算法来恢复大小为$O(N^{1/2-ε})$、$ε>0$的种植集团。在本文中，我们将应用一个标准的方法，无序模型的分析，的Pupel-Tempering（PT）算法，团的问题，数值计算表明，它的时间尺度在硬区确实是多项式的分析大小。我们还将PT应用于一个不同的但连接的模型，稀疏种植独立集问题。在这种情况下，阈值应该更尖锐，有限大小的校正应该不那么重要。同样在这种情况下，PT示出了用于恢复的硬区域中的多项式缩放。
英文摘要：
The theoretical information threshold for the planted clique problem is $2\log_2(N)$, however no polynomial algorithm is known to recover a planted clique of size $O(N^{1/2-ε})$, $ε>0$. In this paper we will apply a standard method for the analysis of disordered models, the Parallel-Tempering (PT) algorithm, to the clique problem, showing numerically that its time-scaling in the hard region is indeed polynomial for the analyzed sizes. We also apply PT to a different but connected model, the Sparse Planted Independent Set problem. In this situation thresholds should be sharper and finite size corrections should be less important. Also in this case PT shows a polynomial scaling in the hard region for the recovery.
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