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  • Search: subject:"Levy walks"
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Subject
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Lévy walks 9 Anomalous diffusion 6 Heavy tails 3 Cybersecurity 2 Fractional spatial and temporal dynamic exponents 2 Internet-Of-Things 2 Inverse Transform Sampling 2 Levy walks 2 Long-term non-linear autocorrelation 2 Lévy Distribution 2 Lévy-Walks 2 Non-Gaussian stochastic process 2 Real-Time 2 Scaling relations 2 Smirnov Transform 2 Stochastic hierarchical spatial–temporal coupling 2 Synthetic Data 2 Weierstrass and combined Weierstrass walks 2 Weierstrass or Lévy walks with varying velocity 2 Weierstrass walks 2 Zero-Crossing Rate 2 Animal dynamics 1 Animal foraging behavior 1 Brownian ratchets 1 Cell motility 1 Cognitive Security Systems 1 Complexity 1 Continuous-time Lévy flights 1 Continuous-time random walks 1 DDoS 1 Deterministic chaos 1 Diffusion exponents 1 Diffusion phase diagram 1 Dynamic diffusion coefficient 1 Fission–fusion processes 1 Foraging 1 Foraging behaviours 1 Foraging efficiency 1 Fractal search space 1 Fractals 1
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Undetermined 15
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Article 15
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Undetermined 13 English 2
Author
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Reynolds, A.M. 5 Kutner, Ryszard 4 Gonzalez, Jesus David Terrazas 2 Kinsner, Witold 2 Świtała, Filip 2 Beims, Marcus W. 1 Boccignone, Giuseppe 1 Ferraro, Mario 1 Ferreira, A.S. 1 Geritz, S.A.H. 1 Latora, V 1 Rapisarda, A 1 Raposo, E.P. 1 Rosa, Jane 1 Ruffo, S 1 Viswanathan, G.M. 1 da Luz, M.G.E. 1
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Physica A: Statistical Mechanics and its Applications 13 International Journal of Handheld Computing Research (IJHCR) 1 International Journal of Software Science and Computational Intelligence (IJSSCI) 1
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RePEc 13 Other ZBW resources 2
Showing 1 - 10 of 15
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Zero-Crossing Analysis and Information Divergence of Lévy Walks for Real-Time Feature Extraction
Gonzalez, Jesus David Terrazas; Kinsner, Witold - In: International Journal of Handheld Computing Research (IJHCR) 7 (2016) 4, pp. 41-59
A method, based on the Smirnov transform, for generating synthetic data with the statistical properties of Lévy-walks … cybersecurity engineering problem associated with Internet traffic is addressed. The synthetic Lévy-walks process is intertwined …-Leibler divergence (KLD), among the pdfs of arbitrary processes (focusing on Lévy walks) and model pdfs is presented. The results …
Persistent link: https://www.econbiz.de/10012045165
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Zero-Crossing Analysis of Lévy Walks and a DDoS Dataset for Real-Time Feature Extraction: Composite and Applied Signal Analysis for Strengthening the Internet-of-Things Against DDo...
Kinsner, Witold; Gonzalez, Jesus David Terrazas - In: International Journal of Software Science and … 8 (2016) 4, pp. 1-28
A comparison between the probability similarities of a Distributed Denial-of-Service (DDoS) dataset and Lévy walks is … presented. This effort validates Lévy walks as a model resembling DDoS probability features. In addition, a method, based on the … Smirnov transform, for generating synthetic data with the statistical properties of Lévy-walks is demonstrated. The Smirnov …
Persistent link: https://www.econbiz.de/10012048031
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Tsallis distributions, Lévy walks and correlated-type anomalous diffusion result from state-dependent diffusion
Reynolds, A.M.; Geritz, S.A.H. - In: Physica A: Statistical Mechanics and its Applications 424 (2015) C, pp. 317-321
(subdiffusion, superdiffusion and superballistic movements), Lévy walks and multiplicative noise. Our analyses find empirical …
Persistent link: https://www.econbiz.de/10011194009
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The influence of the environment on Lévy random search efficiency: Fractality and memory effects
Ferreira, A.S.; Raposo, E.P.; Viswanathan, G.M.; da … - In: Physica A: Statistical Mechanics and its Applications 391 (2012) 11, pp. 3234-3246
An open problem in the field of random searches relates to optimizing the search efficiency in fractal environments. Here we address this issue through a systematic study of Lévy searches in landscapes encompassing several degrees of target aggregation and fractality. For scarce resources,...
Persistent link: https://www.econbiz.de/10010591666
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On the origin of bursts and heavy tails in animal dynamics
Reynolds, A.M. - In: Physica A: Statistical Mechanics and its Applications 390 (2011) 2, pp. 245-249
Over recent years there has been an accumulation of evidence that many animal behaviours are characterised by common scale-invariant patterns of switching between two contrasting activities over a period of time. This is evidenced in mammalian wake–sleep patterns, in the intermittent...
Persistent link: https://www.econbiz.de/10011059488
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Stock market context of the Lévy walks with varying velocity
Kutner, Ryszard - In: Physica A: Statistical Mechanics and its Applications 314 (2002) 1, pp. 786-795
We developed the most general Lévy walks with varying velocity, shorter called the Weierstrass walks (WW) model, by … points, i.e., the velocity is a piecewise constant function. This model is a kind of Lévy walks where we assume a …
Persistent link: https://www.econbiz.de/10010873483
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Balancing the competing demands of harvesting and safety from predation: Lévy walk searches outperform composite Brownian walk searches but only when foraging under the risk of predation
Reynolds, A.M. - In: Physica A: Statistical Mechanics and its Applications 389 (2010) 21, pp. 4740-4746
Some foragers have movement patterns that can be approximated by Lévy walks whilst others may be better represented as … demands of harvesting and safety from predation. In accordance with observations, it is shown that Lévy walks are expected in … advantageous when the risk of predation is low. Despite having fundamentally different properties, Lévy walks and composite …
Persistent link: https://www.econbiz.de/10010872979
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Can spontaneous cell movements be modelled as Lévy walks?
Reynolds, A.M. - In: Physica A: Statistical Mechanics and its Applications 389 (2010) 2, pp. 273-277
Review E 79 (2009) 011110] that realises Lévy walks as Markovian stochastic processes. This brings forth new biological … insight as Lévy walks are advantageous when searching in the absence of external stimuli and without knowledge of the target … spontaneous movement patterns that can be approximated by Lévy walks, as first proposed by Schuster and Levandowsky (1996) [F …
Persistent link: https://www.econbiz.de/10011061648
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Adaptive Lévy walks can outperform composite Brownian walks in non-destructive random searching scenarios
Reynolds, A.M. - In: Physica A: Statistical Mechanics and its Applications 388 (2009) 5, pp. 561-564
is non-destructive and when the Lévy walks are not responsive to conditions found in the search. Here a new class of … is not located after travelling a distance equal to the ‘giving-up distance’. It is found that adaptive Lévy walks …
Persistent link: https://www.econbiz.de/10010874866
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Optimal transport in a ratchet coupled to a modulated environment: The role of Levy walks
Rosa, Jane; Beims, Marcus W. - In: Physica A: Statistical Mechanics and its Applications 386 (2007) 1, pp. 54-62
motion and Levy walks (anomalous random walks) are observed for any N and for low values of the external amplitude F. The … superdiffusive motion disappears and Levy walks are transformed into normal random walks. …
Persistent link: https://www.econbiz.de/10011060570
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