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相关论文: Zipf's law in Multifragmentation

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Some of the progress in determining the phase boundaries of the nuclear phase diagram, the location of the critical point of the nuclear fragmentation phase transition, and the values of the critical exponents of this transition is…

核理论 · 物理学 2007-05-23 Wolfgang Bauer , Brandon Alleman , Scott Pratt

We investigate the average sizes of the $n$ largest fragments in nuclear multifragmentation events near the critical point of the nuclear matter phase diagram. We perform analytic calculations employing Poisson statistics as well as Monte…

核理论 · 物理学 2008-11-26 K. Paech , W. Bauer , S. Pratt

We show that Zipf's Law for the largest clusters is not valid in an exact sense at the critical point of the fragmentation phase transition, contrary to previous claims. Instead, the extracted distributions of the largest clusters reflects…

核理论 · 物理学 2008-11-26 Wolfgang Bauer , Scott Pratt , Brandon Alleman

The moment analysis method and nuclear Zipf's law of fragment size distributions are reviewed to study nuclear disassembly. In this report, we present a compilation of both theoretical and experimental studies on moment analysis and Zipf…

核实验 · 物理学 2007-05-23 Y. G. Ma

Zipf's law is shown to arise as the variational solution of a problem formulated in Fisher's terms. An appropriate minimization process involving Fisher information and scale-invariance yields this universal rank distribution. As an example…

物理与社会 · 物理学 2015-05-13 A. Hernando , D. Puigdomenech , D. Villuendas , C. Vesperinas , A. Plastino

Zipf's law in the field of linguistics is tested in the nuclear disassembly within the framework of isospin dependent lattice gas model. It is found that the average cluster charge (or mass) of rank $n$ in the charge (or mass) list shows…

核理论 · 物理学 2007-05-23 Y. G. Ma

Zipf's law, which states that the probability of an observation is inversely proportional to its rank, has been observed in many domains. While there are models that explain Zipf's law in each of them, those explanations are typically…

神经元与认知 · 定量生物学 2016-07-06 Laurence Aitchison , Nicola Corradi , Peter E. Latham

Zipf's law describes the empirical size distribution of the components of many systems in natural and social sciences and humanities. We show, by solving a statistical model, that Zipf's law co-occurs with the maximization of the diversity…

As the most fundamental empirical law, Zipf's law has been studied from many aspects. But its meaning is still an open problem. Some models have been constructed to explain Zipf's law. In the letter, a new concept named nonsymmetric entropy…

无序系统与神经网络 · 物理学 2007-05-23 Chengshi Liu

It is shown that the distribution of low variability periods in the activity of human heart rate typically follows a multi-scaling Zipf's law. The presence or failure of a power law, as well as the values of the scaling exponents, are…

医学物理 · 物理学 2007-05-23 J. Kalda , M. Sakki , M. Vainu , M. Laan

We describe the link between the Zipf law and statistical distributions for the Fortuin-Kasteleyn clusters in Ising as well as Potts models. From these results it is seen that Zipf's law can be a criterion of a phase transition, but it does…

统计力学 · 物理学 2015-06-18 Krystyna Lukierska-Walasek , Krzysztof Topolski

Zipf's law in its basic incarnation is an empirical probability distribution governing the frequency of usage of words in a language. As Terence Tao recently remarked, it still lacks a convincing and satisfactory mathematical explanation.…

信息论 · 计算机科学 2013-04-30 Yuri I. Manin

Using data from gene expression databases on various organisms and tissues, including yeast, nematodes, human normal and cancer tissues, and embryonic stem cells, we found that the abundances of expressed genes exhibit a power-law…

生物物理 · 物理学 2009-11-07 Chikara Furusawa , Kunihiko Kaneko

According to Zipf's meaning-frequency law, words that are more frequent tend to have more meanings. Here it is shown that a linear dependency between the frequency of a form and its number of meanings is found in a family of models of…

计算与语言 · 计算机科学 2016-10-14 Ramon Ferrer-i-Cancho

We show that the laws of Zipf and Benford, obeyed by scores of numerical data generated by many and diverse kinds of natural phenomena and human activity are related to the focal expression of a generalized thermodynamic structure. This…

统计力学 · 物理学 2015-05-19 Carlo Altamirano , Alberto Robledo

Zipf's law states that sequential frequencies of words in a text correspond to a power function. Its probabilistic model is an infinite urn scheme with asymptotically power distribution. The exponent of this distribution must be estimated.…

统计理论 · 数学 2017-06-15 Mikhail Chebunin , Artyom Kovalevskii

It turns out that some empirical facts in Big Data are the effects of properties of large numbers. Zipf's law 'noise' is an example of such an artefact. We expose several properties of the power law distributions and of similar distribution…

物理与社会 · 物理学 2023-05-09 Horia-Nicolai L. Teodorescu

Zipf's law is the most common statistical distribution displaying scaling behavior. Cities, populations or firms are just examples of this seemingly universal law. Although many different models have been proposed, no general theoretical…

统计力学 · 物理学 2010-07-05 Bernat Corominas Murtra , Ricard Solé

Zipf's law states that the frequency of an observation with a given value is inversely proportional to the square of that value; Taylor's law, instead, describes the scaling between fluctuations in the size of a population and its mean.…

物理与社会 · 物理学 2018-09-26 Charlotte James , Sandro Azaele , Amos Maritan , Filippo Simini

Zipf's law is a fundamental paradigm in the statistics of written and spoken natural language as well as in other communication systems. We raise the question of the elementary units for which Zipf's law should hold in the most natural way,…

物理与社会 · 物理学 2015-07-14 Alvaro Corral , Gemma Boleda , Ramon Ferrer-i-Cancho
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