Multifractal detrended cross-correlation analysis for two nonstationary signalsIt is ubiquitous in natural and social sciences that two variables, recorded temporally or spatially in a complex system, are cross-correlated and possess multifractal features. We propose a new…Wei-Xing Zhou·Mar 19, 2008SaveLearn
A Markov Process Inspired Cellular Automata Model of Road TrafficTo provide a more accurate description of the driving behaviors in vehicle queues, a namely Markov-Gap cellular automata model is proposed in this paper. It views the variation of the gap between two…Fa Wang, Li Li, Jianming Hu et al.·Mar 18, 2008SaveLearn
Modeling Spacing Distribution of Queuing Vehicles in Front of a Signalized Junction Using Random-Matrix TheoryModeling of headway/spacing between two consecutive vehicles has many applications in traffic flow theory and transport practice. Most known approaches only study the vehicles running on freeways. In…Xuexiang Jin, Yuelong Su, Yi Zhang et al.·Mar 18, 2008SaveLearn
Some Considerations on Six Degrees of Separation from A Theoretical Point of ViewIn this article we discuss six degrees of separation, which has been proposed by Milgram, from a theoretical point of view. Simply if one has k friends, the number N of indirect friends goes up…Norihito Toyota·Mar 17, 2008SaveLearn
Support Vector Machines in High Energy PhysicsThis lecture will introduce the Support Vector algorithms for classification and regression. They are an application of the so called kernel trick, which allows the extension of a certain class of…Anselm Vossen·Mar 16, 2008SaveLearn
Basics of Feature Selection and Statistical Learning for High Energy PhysicsThis document introduces basics in data preparation, feature selection and learning basics for high energy physics tasks. The emphasis is on feature selection by principal component analysis,…Anselm Vossen·Mar 16, 2008SaveLearn
Applying weighted network measures to microarray distance matricesIn recent work we presented a new approach to the analysis of weighted networks, by providing a straightforward generalization of any network measure defined on unweighted networks. This approach is…S. E. Ahnert, D. Garlaschelli, T. M. A. Fink et al.·Mar 10, 2008SaveLearn
Conformal Invariance of Iso-height Lines in two-dimensional KPZ SurfaceThe statistics of the iso-height lines in (2+1)-dimensional Kardar-Parisi-Zhang (KPZ) model is shown to be conformal invariant and equivalent to those of self-avoiding random walks. This leads to a…A. A. Saberi, M. D. Niry, S. M. Fazeli et al.·Mar 7, 2008SaveLearn
Fitness, chance, and myths: an objective view on soccer resultsWe analyze the time series of soccer matches in a model-free way using data for the German soccer league (Bundesliga). We argue that the goal difference is a better measure for the overall fitness of…Andreas Heuer, Oliver Rubner·Mar 5, 2008SaveLearn
A trajectory approach to two-state kinetics of single particles on sculpted energy landscapesWe study the trajectories of a single colloidal particle as it hops between two energy wells A and B, which are sculpted using adjacent optical traps by controlling their respective power levels and…David Wu, Kingshuk Ghosh, Mandar Inamdar et al.·Mar 4, 2008SaveLearn
Ants are not ConsciousAnthropic reasoning is a form of statistical reasoning based upon finding oneself a member of a particular reference class of conscious beings. By considering empirical distribution functions defined…Russell K. Standish·Feb 28, 2008SaveLearn
Bayesian considerations on the multiverse explanation of cosmic fine-tuningThe fundamental laws and constants of our universe seem to be finely tuned for life. The various multiverse hypotheses are popular explanations for the fine tuning. This paper reviews the four main…V. Palonen·Feb 27, 2008SaveLearn
Information Filtering via Self-Consistent RefinementRecommender systems are significant to help people deal with the world of information explosion and overload. In this Letter, we develop a general framework named self-consistent refinement and…Jie Ren, Tao Zhou, Yi-Cheng Zhang·Feb 26, 2008SaveLearn
BHP universality and gaussianity in sunspot numbers fluctuationsWe analyze the famous Wolf's sunspot numbers. We discovered that the distribution of the sunspot number fluctuations is a mixture of the BHP distribution with the Gaussian distribution.R. Gonçalves, A. A. Pinto·Feb 20, 2008SaveLearn
Why Does Zipf's Law Break Down in Rank-Size Distribution of Cities?We study rank-size distribution of cities in Japan on the basis of data analysis. From the census data after World War II, we find that the rank-size distribution of cities is composed of two parts,…Hiroto Kuninaka, Mitsugu Matsushita·Feb 20, 2008SaveLearn
Differences between normal and shuffled texts: structural properties of weighted networksIn this paper we deal with the structural properties of weighted networks. Starting from an empirical analysis of a linguistic network, we analyse the differences between the statistical properties…A. P. Masucci, G. J. Rodgers·Feb 20, 2008SaveLearn
Exact mean first-passage time on the T-graphWe consider a simple random walk on the T-fractal and we calculate the exact mean time τg to first reach the central node i0. The mean is performed over the set of possible walks from a given…E. Agliari·Feb 15, 2008SaveLearn
Crowding at the Front of the Marathon PacksWe study the crowding of near-extreme events in the time gaps between successive finishers in major international marathons. Naively, one might expect these gaps to become progressively larger for…Sanjib Sabhapandit, Satya N. Majumdar, S. Redner·Feb 12, 2008SaveLearn
Street Hierarchies: A Minority of Streets Account for a Majority of Traffic FlowUrban streets are hierarchically organized in the sense that a majority of streets are trivial, while a minority of streets is vital. This hierarchy can be simply, but elegantly, characterized by the…Bin Jiang·Feb 9, 2008SaveLearn
Transfer matrix method to study electromagnetic showerTransfer matrix method gives underlying dynamics of a multifractal. In the present studies transfer matrix method is applied to multifractal properties of Cherenkov image from which probabilities of…Ashok Razdan·Feb 1, 2008SaveLearn
Active Brownian Motion Models and Applications to RatchetsWe give an overview over recent studies on the model of Active Brownian Motion (ABM) coupled to reservoirs providing free energy which may be converted into kinetic energy of motion. First, we…Alessandro Fiasconaro, Werner Ebeling, Ewa Gudowska-Nowak·Jan 31, 2008SaveLearn
When are Extreme Events the better predictable, the larger they are?We investigate the predictability of extreme events in time series. The focus of this work is to understand under which circumstances large events are better predictable than smaller events.…S. Hallerberg, H. Kantz·Jan 29, 2008SaveLearn
Empirical analysis on a keyword-based semantic systemKeywords in scientific articles have found their significance in information filtering and classification. In this article, we empirically investigated statistical characteristics and evolutionary…Zike Zhang, Linyuan Lv, Jian-Guo Liu et al.·Jan 27, 2008SaveLearn
Measuring the Dynamical State of the Internet: Large Scale Network Tomography via the ETOMIC InfrastructureIn this paper we show how to go beyond the study of the topological properties of the Internet, by measuring its dynamical state using special active probing techniques and the methods of network…Gabor Simon, Jozsef Steger, Peter Haga Istvan Csabai et al.·Jan 27, 2008SaveLearn
A dual assortative measure of community structureCurrent community detection algorithms operate by optimizing a statistic called modularity, which analyzes the distribution of positively weighted edges in a network. Modularity does not account for…Todd D. Kaplan, Stephanie Forrest·Jan 21, 2008SaveLearn