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Universality class of balanced flows with bottlenecks: granular flows, pedestrian fluxes and financial price dynamics
Universality class of balanced flows bottlenecks granular flows pedestrian fluxes financial price dynamics
2012/6/4
We propose and document the evidence for an analogy between the dynamics of granular counter-flows in the presence of bottlenecks or restrictions and financial price formation processes. Using extensi...
Weighted-indexed semi-Markov models for modeling financial returns
rst passage time distribution autocorrelation function exponentially weighted moving average Monte Carlo
2012/6/4
In this paper we propose a new stochastic model based on a generalization of semi-Markov chains to study the high frequency price dynamics of traded stocks. We assume that the financial returns are de...
Hierarchical structure and time-lag correlation in Worldwide Financial Markets
Hierarchical structure time-lag correlation Worldwide Financial Markets Statistical Finance
2012/6/4
Recently, many studies indicated that the minimum spanning tree (MST) network whose metric distance is de?ned by using correlation coe?cients have strong implications on extracting infor- mation from ...
Singularity strength based characterization of financial networks
characterization of financial networks Statistical Finance Data Analysis Statistics and Probability
2012/6/4
Financial markets are well known examples of multi-fractal complex systems that have garnered much interest in their characterization through complex network theory. The recent studies have used corre...
On the non-stationarity of financial time series: impact on optimal portfolio selection
non-stationarity of financial time series impact optimal portfolio selection Statistical Finance
2012/6/2
We investigate the possible drawbacks of employing the standard Pearson estimator to measure correlation coefficients between financial stocks in the presence of non-stationary behavior, and we provid...
Chaos structures. Multicurrency adviser on the basis of NSW model and social-financial nets
Chaos structures Multicurrency adviser NSW model social-financial nets
2011/7/4
Certainly, professionals have some reasons to muzz customers of stock strategies. The more
complicated system brings more difficult formalization of description space and laws of system
evolution. A...
In this paper we see the evolution of a capitalized financial event e,
with respect to a capitalization factor f, as the exponential map of a
suitably defined Lie group Gf,e, supported by the halfsp...
Universal Correlations and Power-Law Tails in Financial Covariance Matrices
Universal Correlations Power-Law Tails Financial Covariance Matrices
2010/11/1
Signatures of universality are detected by comparing individual eigenvalue distributions and level spacings from financial covariance matrices to random matrix predictions. A chopping procedure is dev...
Compensating asynchrony effects in the calculation of financial correlations
Financial correlations Epps effect Market emergence Covariance estimation Asynchronous time series
2010/11/2
We present a method to compensate statistical errors in the calculation of correlations on asynchronous time series.The method is based on the assumption of an underlying time series. We set up a mode...
A mathematical proof of the existence of trends in financial time series
Financial time series mathematical finance technical analysis trends
2010/10/29
We are settling a longstanding quarrel in quantitative finance by proving the existence of trends in financial time series thanks to a theorem due to P. Cartier and Y. Perrin, which is expressed in th...