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Data Analysis papers — page 107

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The solution classical and quantum feedback optimal control problem without the Bellman Equation
A new approach, which is proposed in this paper allows one to construct the Bellman function V(t,x) and optimal control u(t) directly,i.e.,without any reference to the Bellman equation, by way of…
Jaykov FoukzonNov 13, 2008
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Simultaneous Determination of Signal and Background Asymmetries
This article discusses the determination of asymmetries. We consider a sample of events consisting of a peak of signal events on top of some background events. Both signal and background have an…
Jörg Pretz, Jean-Marc Le GoffNov 10, 2008
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The infinite partition of a line segment and multifractal objects
We report an algorithm for the partition of a line segment according to a given ratio ν. At each step the length distribution among sets of the partition follows a binomial distribution. We call…
A. I. L. de Araújo, R. F. Soares, J. P. de Oliveira et al.Nov 7, 2008
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Microdynamics in stationary complex networks
Many complex systems, including networks, are not static but can display strong fluctuations at various time scales. Characterizing the dynamics in complex networks is thus of the utmost importance…
Aurelien Gautreau, Alain Barrat, Marc BarthelemyNov 6, 2008
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Generalized theory for node disruption in finite size complex networks
After a failure or attack the structure of a complex network changes due to node removal. Here, we show that the degree distribution of the distorted network, under any node disturbances, can be…
Bivas Mitra, Niloy Ganguly, Sujoy Ghose et al.Nov 4, 2008
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Modeling Discrete Combinatorial Systems as Alphabetic Bipartite Networks: Theory and Applications
Life and language are discrete combinatorial systems (DCSs) in which the basic building blocks are finite sets of elementary units: nucleotides or codons in a DNA sequence and letters or words in a…
Monojit Choudhury, Niloy Ganguly, Abyayananda Maiti et al.Nov 4, 2008
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Anomaly Detection in Streaming Sensor Data
In this chapter we consider a cell phone network as a set of automatically deployed sensors that records movement and interaction patterns of the population. We discuss methods for detecting…
Alec Pawling, Ping Yan, Julián Candia et al.Oct 28, 2008
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Visual Physics Analysis (VISPA) - Concepts and First Applications
VISPA is a novel development environment for high energy physics analyses, based on a combination of graphical and textual steering. The primary aim of VISPA is to support physicists in prototyping,…
O. Actis, M. Erdmann, R. Fischer et al.Oct 20, 2008
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X-ray tracing using Geant4
We describe an extension to the Geant4 software package that allows it to be used as a general purpose X-ray tracing package. We demonstrate its use by building a model of the X-ray optics of the…
Ernst-Jan Buis, Giuseppe VacantiOct 7, 2008
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From time series to complex networks: the visibility graph
In this work we present a simple and fast computational method, the visibility algorithm, that converts a time series into a graph. The constructed graph inherits several properties of the series in…
Lucas Lacasa, Bartolo Luque, Fernando Ballesteros et al.Oct 6, 2008
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Bayesian estimation for selective trace gas detection
We present a Bayesian estimation analysis for a particular trace gas detection technique with species separation provided by differential diffusion. The proposed method collects a sample containing…
John K. Stockton, Ari K. TuchmanOct 6, 2008
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Mental States as Macrostates Emerging from EEG Dynamics
Correlations between psychological and physiological phenomena form the basis for different medical and scientific disciplines, but the nature of this relation has not yet been fully understood. One…
Carsten Allefeld, Harald Atmanspacher, Jiri WackermannOct 2, 2008
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Continuous-Discrete Path Integral Filtering
A summary of the relationship between the Langevin equation, Fokker-Planck-Kolmogorov forward equation (FPKfe) and the Feynman path integral descriptions of stochastic processes relevant for the…
Bhashyam BalajiOct 1, 2008
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Characterizing Human Mobility Patterns in a Large Street Network
Previous studies demonstrated empirically that human mobility exhibits Levy flight behaviour. However, our knowledge of the mechanisms governing this Levy flight behaviour remains limited. Here we…
Bin Jiang, Junjun Yin, Sijian ZhaoSep 29, 2008
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Dynamic Computation of Network Statistics via Updating Schema
In this paper we derive an updating scheme for calculating some important network statistics such as degree, clustering coefficient, etc., aiming at reduce the amount of computation needed to track…
Jie Sun, James P. Bagrow, Erik M. Bollt et al.Sep 26, 2008
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Sparse image reconstruction for molecular imaging
The application that motivates this paper is molecular imaging at the atomic level. When discretized at sub-atomic distances, the volume is inherently sparse. Noiseless measurements from an imaging…
Michael Ting, Raviv Raich, Alfred O. HeroSep 24, 2008
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Hierarchical Bayesian sparse image reconstruction with application to MRFM
This paper presents a hierarchical Bayesian model to reconstruct sparse images when the observations are obtained from linear transformations and corrupted by an additive white Gaussian noise. Our…
Nicolas Dobigeon, Alfred O. Hero, Jean-Yves TourneretSep 22, 2008
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Optimal Adaptive Nonparametric Denoising of Multidimensional - Time Signal
We construct an adaptive asymptotically optimal in the classical norm of the space L(2) of square integrable functions non - parametrical multidimensional time defined signal regaining (adaptive…
Eugene Ostrovsky, Leonid SirotaSep 17, 2008
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Ergodic Properties of Fractional Brownian-Langevin Motion
We investigate the time average mean square displacement δ2(x(t))=∫0t-Δ[x(t+Δ)-x(t)]2 dt/(t-Δ) for fractional Brownian and Langevin motion. Unlike the…
Weihua Deng, Eli BarkaiSep 15, 2008
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Resonant control of stochastic spatio-temporal dynamics in a tunnel diode by multiple time delayed feedback
We study the control of noise-induced spatio-temporal current density patterns in a semiconductor nanostructure (double barrier resonant tunnelling diode) by multiple time-delayed feedback. We find…
Niels Majer, Eckehard SchöllSep 9, 2008
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Approximate Hamiltonian Statistics in One-dimensional Driven Dissipative Many-Particle Systems
This contribution presents a derivation of the steady-state distribution of velocities and distances of driven particles on a onedimensional periodic ring. We will compare two different situations:…
Martin Treiber, Dirk HelbingSep 2, 2008
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Highly accurate recommendation algorithm based on high-order similarities
In this Letter, we introduce a modified collaborative filtering (MCF) algorithm, which has remarkably higher accuracy than the standard collaborative filtering. In the MCF, instead of the standard…
Jian-Guo Liu, Tao Zhou, Bing-Hong Wang et al.Aug 27, 2008
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Dynamic scaling approach to study time series fluctuations
We propose a new approach for properly analyzing stochastic time series by mapping the dynamics of time series fluctuations onto a suitable nonequilibrium surface-growth problem. In this framework,…
Alexander S. BalankinAug 24, 2008
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A random telegraph signal of Mittag-Leffler type
A general method is presented to explicitly compute autocovariance functions for non-Poisson dichotomous noise based on renewal theory. The method is specialized to a random telegraph signal of…
Simone Ferraro, Michele Manzini, Aldo Masoero et al.Aug 19, 2008
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BAT - The Bayesian Analysis Toolkit
We describe the development of a new toolkit for data analysis. The analysis package is based on Bayes' Theorem, and is realized with the use of Markov Chain Monte Carlo. This gives access to the…
Allen Caldwell, Daniel Kollar, Kevin KroeningerAug 19, 2008
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