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arXiv 2301.08787cs.ETcond-mat.stat-mechcs.NEnlin.AO
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数字忆存计算的自平均

Self-averaging of digital memcomputing machines

Daniel Primosch, Yuan-Hang Zhang, Massimiliano Di Ventra

AI总结:

研究数字忆存计算求解组合优化问题时的求解时间分布特性,发现其随问题规模增大呈现自平均现象,对实例细节不敏感,相比传统算法具有显著优势。

摘要:

数字忆存计算(DMMs)是一类新型计算机器,采用具有记忆的非量子动力系统来求解组合优化问题。在此,我们表明 DMMs 的求解时间(TTS)服从逆高斯分布,且 TTS 随问题规模增大而自平均,与所求解的问题无关。我们通过求解 3-SAT(可满足性)问题的实例,提供了对这一现象的解析理解和数值证据。DMMs 随问题规模的自平均特性意味着,它们对所求解实例的细节特征越来越不敏感。这与应用于相同问题的传统算法形成鲜明对比,展示了这种基于物理的计算方法的另一优势。

英文摘要:

Digital memcomputing machines (DMMs) are a new class of computing machines that employ non-quantum dynamical systems with memory to solve combinatorial optimization problems. Here, we show that the time to solution (TTS) of DMMs follows an inverse Gaussian distribution, with the TTS self-averaging with increasing problem size, irrespective of the problem they solve. We provide both an analytical understanding of this phenomenon and numerical evidence by solving instances of the 3-SAT (satisfiability) problem. The self-averaging property of DMMs with problem size implies that they are increasingly insensitive to the detailed features of the instances they solve. This is in sharp contrast to traditional algorithms applied to the same problems, illustrating another advantage of this physics-based approach to computation.

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