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We model the dynamics of test binaries in isotropic, multi-mass models of galactic globular clusters. The evolution of binary orbits through the cluster potentials is modeled, including second order diffusion terms, and probabilities for…

天体物理学 · 物理学 2008-11-26 Steinn Sigurdsson , E. S. Phinney

Many legal cases require decisions about causality, responsibility or blame, and these may be based on statistical data. However, causal inferences from such data are beset by subtle conceptual and practical difficulties, and in general it…

统计理论 · 数学 2020-04-28 Philip Dawid , Monica Musio , Rossella Murtas

A single panel of a comic book can say a lot: it can depict not only where the characters currently are, but also their motions, their motivations, their emotions, and what they might do next. More generally, humans routinely infer complex…

人工智能 · 计算机科学 2023-10-31 Kartik Chandra , Tony Chen , Tzu-Mao Li , Jonathan Ragan-Kelley , Josh Tenenbaum

Empirical relationships are derived for the expected sampling error of quantile estimations using Monte Carlo experiments for two frequency distributions frequently encountered in climate sciences. The relationships found are expressed as a…

统计方法学 · 统计学 2016-10-12 Philippe Roy , René Laprise , Philippe Gachon

We apply Monte Carlo Markov Chain (MCMC) methods to large-scale simulations of galaxy formation in a LambdaCDM cosmology in order to explore how star formation and feedback are constrained by the observed luminosity and stellar mass…

宇宙学与河外天体物理 · 物理学 2015-06-12 Bruno Henriques , Simon White , Peter Thomas , Raul Angulo , Qi Guo , Gerard Lemson , Volker Springel

The search for technosignatures from hypothetical galactic civilizations is going through a new phase of intense activity. For the first time, a significant fraction of the vast search space is expected to be sampled in the foreseeable…

天体物理仪器与方法 · 物理学 2019-03-26 Claudio Grimaldi , Geoffrey W. Marcy

Discovering causal relationships from observational data is a challenging task that relies on assumptions connecting statistical quantities to graphical or algebraic causal models. In this work, we focus on widely employed assumptions for…

统计方法学 · 统计学 2024-03-20 Jonas Wahl , Urmi Ninad , Jakob Runge

This study is aimed at investigating the dynamic evolution of the orbits of stellar globular clusters (GCs). To integrate the orbits backward in time, the authors use models of the time-varying potentials derived from cosmological…

星系天体物理 · 物理学 2023-01-18 Maryna Ishchenko , Margaryta Sobolenko , Peter Berczik , Taras Panamarev

We study approximations of evolving probability measures by an interacting particle system. The particle system dynamics is a combination of independent Markov chain moves and importance sampling/resampling steps. Under global regularity…

概率论 · 数学 2011-12-12 Andreas Eberle , Carlo Marinelli

Large-scale Monte Carlo simulations, together with scaling, are used to obtain the critical behavior of the Hastings long-range model and two corresponding models based on small-world networks. These models have combined short- and…

材料科学 · 物理学 2007-05-23 X. Zhang , M. A. Novotny

We review a recently devised Monte Carlo simulation method for the direct study of quasi-stationary properties of stochastic processes with an absorbing state. The method is used to determine the static correlation function and the…

统计力学 · 物理学 2009-11-10 Ronald Dickman , Marcelo Martins de Oliveira

It is well-known that the chances of success of SETI depend on the longevity of technological civilizations or, more broadly, on the duration of the signs of their existence, or technosignatures. Here, we re-examine this general tenet in…

天体物理仪器与方法 · 物理学 2021-04-28 Amedeo Balbi , Milan M. Ćirković

The massive employment of computational models in network epidemiology calls for the development of improved inference methods for epidemic forecast. For simple compartment models, such as the Susceptible-Infected-Recovered model, Belief…

物理与社会 · 物理学 2017-07-05 Jacopo Bindi , Alfredo Braunstein , Luca Dall'Asta

In the past few decades, the frequency of pandemics has been increased due to the growth of urbanization and mobility among countries. Since a disease spreading in one country could become a pandemic with a potential worldwide humanitarian…

物理与社会 · 物理学 2020-04-01 L. D. Valdez , L. A. Braunstein , S. Havlin

Discovering causal relationships is a hard task, often hindered by the need for intervention, and often requiring large amounts of data to resolve statistical uncertainty. However, humans quickly arrive at useful causal relationships. One…

机器学习 · 统计学 2011-12-01 Pedro A. Ortega

In this article we focus on dynamic network data which describe interactions among a fixed population through time. We model this data using the latent space framework, in which the probability of a connection forming is expressed as a…

统计方法学 · 统计学 2021-12-21 Kathryn Turnbull , Christopher Nemeth , Matthew Nunes , Tyler McCormick

Metropolis Monte Carlo simulation is a powerful tool for studying the equilibrium properties of matter. In complex condensed-phase systems, however, it is difficult to design Monte Carlo moves with high acceptance probabilities that also…

统计力学 · 物理学 2014-05-27 Jerome P. Nilmeier , Gavin E. Crooks , David D. L. Minh , John D. Chodera

Many real-world complex systems including human interactions can be represented by temporal (or evolving) networks, where links activate or deactivate over time. Characterizing temporal networks is crucial to compare such systems and to…

物理与社会 · 物理学 2022-08-30 Alberto Ceria , Shlomo Havlin , Alan Hanjalic , Huijuan Wang

The interactions among human beings represent the backbone of our societies. How people interact, establish new connections, and allocate their activities among these links can reveal a lot of our social organization. Despite focused…

物理与社会 · 物理学 2021-03-01 Enrico Ubaldi , Raffaella Burioni , Vittorio Loreto , Fancesca Tria

Several observational works have attempted to isolate the effects of galaxy interactions by comparing galaxies in pairs with isolated galaxies. However, different authors have proposed different ways to build these so-called control samples…

宇宙学与河外天体物理 · 物理学 2015-05-13 Josefa Perez , Patricia Tissera , Jeremy Blaizot , .