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Data Analysis papers — page 92

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Optimal Dimensionality Reduction of Complex Dynamics: The Chess Game as Diffusion on a Free Energy Landscape
Dimensionality reduction is ubiquitous in analysis of complex dynamics. The conventional dimensionality reduction techniques, however, focus on reproducing the underlying configuration space, rather…
Sergei V. KrivovMar 18, 2011
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Analyzing biosignals using the R freeware (open source) tool
For researchers in electromyography (EMG), and similar biosginals, signal processing is naturally an essential topic. There are a number of excellent tools available. To these one may add the freely…
Frank BorgMar 16, 2011
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Bayesian versus frequentist upper limits
While gravitational waves have not yet been measured directly, data analysis from detection experiments commonly includes an upper limit statement. Such upper limits may be derived via a frequentist…
Christian Röver, Chris Messenger, Reinhard PrixMar 15, 2011
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A program for the Bayesian Neural Network in the ROOT framework
We present a Bayesian Neural Network algorithm implemented in the TMVA package, within the ROOT framework. Comparing to the conventional utilization of Neural Network as discriminator, this new…
Jiahang Zhong, Run-Sheng Huang, Shih-Chang LeeMar 15, 2011
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Weibull-type limiting distribution for replicative systems
The Weibull function is widely used to describe skew distributions observed in nature. However, the origin of this ubiquity is not always obvious to explain. In the present paper, we consider the…
Junghyo Jo, Jean-Yves Fortin, M. Y. ChoiMar 15, 2011
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A Paradoxical Property of the Monkey Book
A "monkey book" is a book consisting of a random distribution of letters and blanks, where a group of letters surrounded by two blanks is defined as a word. We compare the statistics of the…
Sebastian Bernhardsson, Seung Ki Baek, Petter MinnhagenMar 14, 2011
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Adaptive mosaic image representation for image processing
Method for a mosaic image representation (MIR) is proposed for a selective treatment of image fragments of different transition frequency. MIR method is based on piecewise-constant image…
Evgenia GelmanMar 11, 2011
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Do firms share the same functional form of their growth rate distribution? A new statistical test
We introduce a new statistical test of the hypothesis that a balanced panel of firms have the same growth rate distribution or, more generally, that they share the same functional form of growth rate…
Josè T. Lunardi, Salvatore Miccichè, Fabrizio Lillo et al.Mar 11, 2011
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Order of precedence and age of Y-DNA haplotypes
A simple method, inspired by procedures used in physics of nuclear multifragmentation, allows to establish order of precedence and age of pairs of haplotypes separated by one mutation. For both…
Martin VeselskyMar 4, 2011
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Analytical maximum-likelihood method to detect patterns in real networks
In order to detect patterns in real networks, randomized graph ensembles that preserve only part of the topology of an observed network are systematically used as fundamental null models. However,…
Tiziano Squartini, Diego GarlaschelliMar 2, 2011
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Incorporating Nuisance Parameters in Likelihoods for Multisource Spectra
We describe here the general mathematical approach to constructing likelihoods for fitting observed spectra in one or more dimensions with multiple sources, including the effects of systematic…
J. S. ConwayMar 2, 2011
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Information filtering via preferential diffusion
Recommender systems have shown great potential to address information overload problem, namely to help users in finding interesting and relevant objects within a huge information space. Some physical…
Linyuan Lu, Weiping LiuFeb 27, 2011
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Theoretical model to deduce a PDF with a power law tail using Extreme Physical Information
The theory of Extreme Physical Information (EPI) is used to deduce a probability density function (PDF) of a system that exhibits a power law tail. The computed PDF is useful to study and fit several…
Ricardo Bonilla, Roberto Zarama, Juan Alejandro ValdiviaFeb 25, 2011
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Estimation of Kramers-Moyal coefficients at low sampling rates
A new optimization procedure for the estimation of Kramers-Moyal coefficients from stationary, one-dimensional, Markovian time series data is presented. The method takes advantage of a recently…
Christoph Honisch, Rudolf FriedrichFeb 25, 2011
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Mathematica with ROOT
We present an open-source Mathematica importer for CERN ROOT files. Taking advantage of Mathematica's import/export plug-in mechanism, the importer offers a simple, unified interface that cleanly…
Ken Hsieh, Thomas G. Throwe, Sebastian WhiteFeb 24, 2011
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Weighted Radial Variation for Node Feature Classification
Connections created from a node-edge matrix have been traditionally difficult to visualize and analyze because of the number of flows to be rendered in a limited feature or cartographic space.…
C. AndrisFeb 23, 2011
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Quantum Informatics View of Statistical Data Processing
Application of root density estimator to problems of statistical data analysis is demonstrated. Four sets of basis functions based on Chebyshev-Hermite, Laguerre, Kravchuk and Charlier polynomials…
Yu. I. Bogdanov, N. A. BogdanovaFeb 21, 2011
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Urban road networks -- Spatial networks with universal geometric features? A case study on Germany's largest cities
Urban road networks have distinct geometric properties that are partially determined by their (quasi-) two-dimensional structure. In this work, we study these properties for 20 of the largest German…
Sonic H. Y. Chan, Reik V. Donner, Stefan LämmerFeb 17, 2011
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Adaptive Cluster Expansion for Inferring Boltzmann Machines with Noisy Data
We introduce a procedure to infer the interactions among a set of binary variables, based on their sampled frequencies and pairwise correlations. The algorithm builds the clusters of variables…
Simona Cocco, Rémi MonassonFeb 16, 2011
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Investigating the topology of interacting networks - Theory and application to coupled climate subnetworks
Network theory provides various tools for investigating the structural or functional topology of many complex systems found in nature, technology and society. Nevertheless, it has recently been…
Jonathan F. Donges, Hanna C. H. Schultz, Norbert Marwan et al.Feb 15, 2011
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The Nuclear Science References (NSR) Database and Web Retrieval System
The Nuclear Science References (NSR) database together with its associated Web interface, is the world's only comprehensive source of easily accessible low- and intermediate-energy nuclear…
B. Pritychenko, E. Betak, M. A. Kellett et al.Feb 14, 2011
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Efficient routing strategies in scale-free networks with limited bandwidth
We study the traffic dynamics in complex networks where each link is assigned a limited and identical bandwidth. Although the first-in-first-out (FIFO) queuing rule is widely applied in the routing…
Ming Tang, Tao ZhouFeb 9, 2011
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On the criticality of inferred models
Advanced inference techniques allow one to reconstruct the pattern of interaction from high dimensional data sets. We focus here on the statistical properties of inferred models and argue that…
Iacopo Mastromatteo, Matteo MarsiliFeb 8, 2011
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Scaling of Geographic Space as a Universal Rule for Map Generalization
Map generalization is a process of producing maps at different levels of detail by retaining essential properties of the underlying geographic space. In this paper, we explore how the map…
Bin Jiang, Xintao Liu, Tao JiaFeb 8, 2011
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Generalized Measures of Information Transfer
Transfer entropy provides a general tool for analyzing the magnitudes and directions---but not the kinds---of information transfer in a system. We extend transfer entropy in two complementary…
Paul L. Williams, Randall D. BeerFeb 8, 2011
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