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arXiv 1805.07166cs.ITmath.IT
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网络编码的热力学及最大熵原理的数学改进

The Thermodynamics of Network Coding, and an Algorithmic Refinement of the Principle of Maximum Entropy

Hector Zenil, Narsis A. Kiani, Jesper Tegnér

摘要:

最大熵原理(Maxent)通常用于获得先验概率分布,作为在某些限制下获得吉布斯测度的方法,给出系统与分布中其余元素相比处于某种状态的概率。由于经典的基于熵的Maxent崩溃的情况下混淆所有不同程度的随机性和伪随机性,在这里,我们考虑到系统的生成机制,在合奏中考虑到分离的对象,可能符合一些限制下的原则,其熵是最大的,但可以从那些实际上是算法随机递归生成提供一个细化经典Maxent。我们利用因果算法演算,根据重新编程计算机代码的难度,推导出类似于数学的结果。利用可计算随机性和算法随机性之间的区别,我们量化了与重编程相关的信息损失成本。为了说明这一点,我们应用算法的改进Maxent图,并介绍了一个最大随机优先附件(MARPA)算法,概括了以前的方法。我们讨论了网络随机性评估的实际意义。我们的分析提供了洞察力,可重编程性的不对称性似乎起源于一个非单调的关系,算法的概率。我们的分析激发了对上述不对称性、可重编程性和计算的起源和后果的进一步分析。

英文摘要:

The principle of maximum entropy (Maxent) is often used to obtain prior probability distributions as a method to obtain a Gibbs measure under some restriction giving the probability that a system will be in a certain state compared to the rest of the elements in the distribution. Because classical entropy-based Maxent collapses cases confounding all distinct degrees of randomness and pseudo-randomness, here we take into consideration the generative mechanism of the systems considered in the ensemble to separate objects that may comply with the principle under some restriction and whose entropy is maximal but may be generated recursively from those that are actually algorithmically random offering a refinement to classical Maxent. We take advantage of a causal algorithmic calculus to derive a thermodynamic-like result based on how difficult it is to reprogram a computer code. Using the distinction between computable and algorithmic randomness we quantify the cost in information loss associated with reprogramming. To illustrate this we apply the algorithmic refinement to Maxent on graphs and introduce a Maximal Algorithmic Randomness Preferential Attachment (MARPA) Algorithm, a generalisation over previous approaches. We discuss practical implications of evaluation of network randomness. Our analysis provides insight in that the reprogrammability asymmetry appears to originate from a non-monotonic relationship to algorithmic probability. Our analysis motivates further analysis of the origin and consequences of the aforementioned asymmetries, reprogrammability, and computation.

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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