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Multivariate spatial phenomena are ubiquitous, spanning domains such as climate, pandemics, air quality, and social economy. Cross-correlation between different quantities of interest at different locations is asymmetric in general. This…

统计方法学 · 统计学 2026-01-27 Xiaoqing Chen

Accurate representation of the physical layer is required for analysis and simulation of multi-hop networking in sensor, ad hoc, and mesh networks. This paper investigates, models, and analyzes the correlations that exist in shadow fading…

应用统计 · 统计学 2008-04-18 Piyush Agrawal , Neal Patwari

Shadowing from vehicles can significantly degrade the performance of vehicle-to-vehicle (V2V) communication in multilink systems, e.g., vehicular ad-hoc networks (VANETs). It is thus important to characterize and model the influence of…

网络与互联网体系结构 · 计算机科学 2017-03-02 Mikael G. Nilsson , Carl Gustafson , Taimoor Abbas , Fredrik Tufvesson

We propose and analyze a new shadowing field model meant to capture spatial correlations. The interference field associated with this new model is compared to that of the widely used independent shadowing model. Independent shadowing over…

信息论 · 计算机科学 2017-12-05 Junse Lee , Francois Baccelli

An important source of high clustering coefficient in real-world networks is transitivity. However, existing approaches for modeling transitivity suffer from at least one of the following problems: i) they produce graphs from a specific…

社会与信息网络 · 计算机科学 2022-12-30 Morteza Haghir Chehreghani , Mostafa Haghir Chehreghani

Intensity mapping experiments will soon have surveyed large swathes of the sky, providing information about the underlying matter distribution of the early universe. The resulting maps can be used to recover statistical information, such as…

宇宙学与河外天体物理 · 物理学 2024-08-15 Lisa McBride , Adrian Liu

We study the covariance of the cross-power spectrum of different tracers for the large-scale structure. We develop the counts-in-cells framework for the multi-tracer approach, and use this to derive expressions for the full non-Gaussian…

天体物理学 · 物理学 2015-05-13 Robert E. Smith

The study of the topological structure of complex networks has fascinated researchers for several decades, and today we have a fairly good understanding of the types and reoccurring characteristics of many different complex networks.…

社会与信息网络 · 计算机科学 2014-06-23 Matthieu Roy , Stefan Schmid , Gilles Trédan

Correlation of interference affects spatio-temporal aspects of various wireless mobile systems, such as retransmission, multiple antennas and cooperative relaying. In this paper, we study the spatial and temporal correlation of interference…

网络与互联网体系结构 · 计算机科学 2019-12-23 Tatsuaki Kimura , Hiroshi Saito

Shadow fading (slow fading) effects play a central role in mobile communication system design and analysis. Experimental evidence indicates that shadow fading exhibits log-normal power distribution almost universally, and yet it is still…

其他计算机科学 · 计算机科学 2007-05-23 Jari Salo

It is shown that spatial correlation functions measured for correlated photon pairs at the single-photon level correspond to speckle patterns visible at high intensities. This correspondence is observed for the first time in one…

量子物理 · 物理学 2015-06-19 Radek Machulka , Ondrej Haderka , Jan Perina , Marco Lamperti , Alessia Allevi , Maria Bondani

We present a study to detect friendship, its strength, and its change from smartphone location data collectedamong members of a fraternity. We extract a rich set of co-location features and build classifiers that detectfriendships and close…

社会与信息网络 · 计算机科学 2020-09-01 Momin M. Malik , Afsaneh Doryab , Michael Merrill , Jürgen Pfeffer , Anind K. Dey

Multivariate spatial field data are increasingly common and whose modeling typically relies on building cross-covariance functions to describe cross-process relationships. An alternative viewpoint is to model the matrix of spectral…

统计理论 · 数学 2015-05-07 William Kleiber

An approach to find a weak form of shadowing is developed. We consider homeomorphisms of a compact metric space. It is proved that every pseudotrajectory with sufficiently small errors contains at least one subsequence that can be shadowed…

动力系统 · 数学 2016-07-12 Danila Cherkashin , Sergey Kryzhevich

We consider position measurements using the cross-correlated output of two tunnel junction position detectors. Using a fully quantum treatment, we calculate the equation of motion for the density matrix of the coupled…

介观与纳米尺度物理 · 物理学 2007-11-27 C. B. Doiron , B. Trauzettel , C. Bruder

This paper introduces a new behavioral system model with distinct external and internal signals possibly evolving on different time scales. This allows to capture abstraction processes or signal aggregation in the context of control and…

系统与控制 · 计算机科学 2014-02-17 Anne-Kathrin Schmuck , Jörg Raisch

We review the main tools which allow for the statistical characterization of weighted networks. We then present two case studies, the airline connection network and the scientific collaboration network, which are representative of critical…

统计力学 · 物理学 2009-11-10 Marc Barthelemy , Alain Barrat , Romualdo Pastor-Satorras , Alessandro Vespignani

The passive estimation of impulse responses from ambient noise correlations arouses increasing interest in seismology, acoustics, optics and electromagnetism. Assuming the equipartition of the noise field, the cross-correlation function…

We apply Bayesian statistics to the estimation of correlation functions. We give the probability distributions of auto- and cross-correlations as functions of the data. Our procedure uses the measured data optimally and informs about the…

数据分析、统计与概率 · 物理学 2022-12-27 Angel Gutierrez-Rubio , Juan S. Rojas-Arias , Jun Yoneda , Seigo Tarucha , Daniel Loss , Peter Stano

By introducing Crossing functions and hyper-parameters I show that the Bayesian interpretation of the Crossing Statistics [1] can be used trivially for the purpose of model selection among cosmological models. In this approach to falsify a…

宇宙学与河外天体物理 · 物理学 2012-05-24 Arman Shafieloo
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