Results 21 to 30 of about 945,466 (294)

Model-free prognostication of non-linear time series.

open access: yesPLoS ONE
ObjectiveThe COVID-19 pandemic has highlighted the importance of studying the course of infectious progression. Similar needs exist for time series of other origins.
Xiaoyong Wu, Shesh N Rai, Georg F Weber
doaj   +2 more sources

Recurrence Plots in Nonlinear Time Series Analysis: Free Software

open access: yesJournal of Statistical Software, 2002
Recurrence plots are graphical devices specially suited to detect hidden dynamical patterns and nonlinearities in data. However, there are few programs available to apply such a mehodology.
Jorge Belaire-Franch, Dulce Contreras
doaj   +3 more sources

Kernel Methods for Nonlinear Connectivity Detection

open access: yesEntropy, 2019
In this paper, we show that the presence of nonlinear coupling between time series may be detected using kernel feature space F representations while dispensing with the need to go back to solve the pre-image problem to gauge model adequacy.
Lucas Massaroppe, Luiz A. Baccalá
doaj   +1 more source

Nonlinear time series prediction algorithm based on AD-SSNET for artificial intelligence–powered Internet of Things

open access: yesInternational Journal of Distributed Sensor Networks, 2021
Time series have broad usage in the wireless Internet of Things. This article proposes a nonlinear time series prediction algorithm based on the Small-World Scale-Free Network after the AIC-Optimized Subtractive Clustering Algorithm (AIC-DSCA-SSNET, AD ...
Banteng Liu   +7 more
doaj   +1 more source

Nonlinear Time Series Modelling: An Introduction [PDF]

open access: yesJournal of Economic Surveys, 1999
Recent developments in nonlinear time series modelling are reviewed. Three main types of nonlinear model are discussed: Markov Switching, Threshold Autoregression and Smooth Transition Autoregression. Classical and Bayesian estimation techniques are described for each model.
openaire   +2 more sources

Stochastic Equicontinuity in Nonlinear Time Series Models [PDF]

open access: yes, 2013
In this paper I provide simple and easily verifiable conditions under which a strong form of stochastic equicontinuity holds in a wide variety of modern time series models.
Andreas Hagemann   +12 more
core   +1 more source

Presenting a new hybrid method for predicting the Stock Exchange price inde [PDF]

open access: yesتحقیقات مالی, 2017
The trend of the stock price index, has taken as one of the investment criteria consistently. Because of the two components of nonlinear and time series price index volatility, in this study, a new hybrid model presented that can predict move and change ...
Diako Dorodi, Seyed Babak Abrahimi
doaj   +1 more source

A skewed perspective of the Indian rainfall–El Niño–Southern Oscillation (ENSO) relationship [PDF]

open access: yesHydrology and Earth System Sciences, 2020
Wavelet coherence is a method that is commonly used in hydrology to extract scale-dependent, nonstationary relationships between time series. However, we show that the method cannot always determine why the time-domain correlation between two time series
J. Schulte, F. Policielli, B. Zaitchik
doaj   +1 more source

Estimation of Right-censored SETAR-type Nonlinear Time-series Model [PDF]

open access: yesE3S Web of Conferences, 2023
This paper focuses on estimating the Self-Exciting Threshold Autoregressive (SETAR) type time-series model under right-censored data. As is known, the SETAR model is used when the underlying function of the relation-ship between the time-series itself ...
Ahmed Syed Ejaz   +2 more
doaj   +1 more source

Inference for nonlinear epidemiological models using genealogies and time series. [PDF]

open access: yesPLoS Computational Biology, 2011
Phylodynamics - the field aiming to quantitatively integrate the ecological and evolutionary dynamics of rapidly evolving populations like those of RNA viruses - increasingly relies upon coalescent approaches to infer past population dynamics from ...
David A Rasmussen   +2 more
doaj   +1 more source

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