Results 21 to 30 of about 198 (153)

Volatility filtering in estimation of kurtosis (and variance)

open access: yesDependence Modeling, 2019
The kurtosis of the distribution of financial returns characterized by high volatility persistence and thick tails is notoriously difficult to estimate precisely.
Anatolyev Stanislav
doaj   +1 more source

Sample correlations of infinite variance time series models: an empirical and theoretical study

open access: yesInternational Journal of Stochastic Analysis, Volume 11, Issue 3, Page 255-282, 1998., 1998
When the elements of a stationary ergodic time series have finite variance the sample correlation function converges (with probability 1) to the theoretical correlation function. What happens in the case where the variance is infinite? In certain cases, the sample correlation function converges in probability to a constant, but not always.
Jason Cohen   +2 more
wiley   +1 more source

Prediction of time series by statistical learning: general losses and fast rates

open access: yesDependence Modeling, 2013
We establish rates of convergences in statistical learning for time series forecasting. Using the PAC-Bayesian approach, slow rates of convergence √ d/n for the Gibbs estimator under the absolute loss were given in a previous work [7], where n is the ...
Alquier Pierre   +2 more
doaj   +1 more source

Peramalan curah hujan di Provinsi Aceh menggunakan metode Box-Jenkins

open access: yesMajalah Ilmiah Matematika dan Statistika, 2023
Floods are one of the natural disasters that frequently occur in Indonesia, including in Aceh Province. Floods primarily occur when rainfall is intense, mainly in the rainy season.
Nurhafifah Nurhafifah   +5 more
doaj   +1 more source

The empirical TES methodology: modeling empirical time series

open access: yesInternational Journal of Stochastic Analysis, Volume 10, Issue 4, Page 333-353, 1997., 1997
TES (Transform‐Expand‐Sample) is a versatile class of stochastic sequences defined via an autoregressive scheme with modulo‐1 reduction and additional transformations. The scope of TES encompasses a wide variety of sample path behaviors, which in turn give rise to autocorrelation functions with diverse functional forms ‐ monotone, oscillatory ...
Benjamin Melamed
wiley   +1 more source

Introducing model uncertainty by moving blocks bootstrap [PDF]

open access: yes, 2006
62M10, 62F40, sieve bootstrap, klockwise bootstrap, prediction, time series, model uncertainty,
Daniel Peña   +7 more
core   +1 more source

Bootstrap tests for nonparametric comparison of regression curves with dependent errors [PDF]

open access: yes, 2007
Hypothesis testing, Regression models, Nonparametric estimators, Dependent data, 62G08, 62G09, 62G10, 62M10,
W. González-Manteiga   +3 more
core   +1 more source

Exponential inequalities for nonstationary Markov chains

open access: yesDependence Modeling, 2019
Exponential inequalities are main tools in machine learning theory. To prove exponential inequalities for non i.i.d random variables allows to extend many learning techniques to these variables.
Alquier Pierre   +2 more
doaj   +1 more source

Geoestadística aplicada a series de tiempo autorregresivas: un estudio de simulación

open access: yesRevista Integración, 2017
La geoestadística puede usarse como método de predicción de datos faltantes en series temporales. El procedimiento se basa en el estudio de la estructura de autocorrelación temporal de la serie de tiempo por medio de la función de variograma, que es ...
Ramón Giraldo   +2 more
doaj   +1 more source

Modelo en series de tiempo para la tasa de penetración de un pozo de petróleo de referencia: Caso Puerto Boyacá - Colombia

open access: yesIngeniería y Ciencia, 2015
En este trabajo se identificó un modelo en series de tiempo para el control de la tasa de penetración (ROP) en un pozo de referencia denominado V∗∗∗ que pertenece al campo en desarrollo VEL que está ubicado en la cuenca del Valle del Magdalena Medio (VMM)
Henry Daniel Hernández Martínez   +1 more
doaj   +1 more source

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