Results 31 to 40 of about 4,998 (266)

Testing and modelling autoregressive conditional heteroskedasticity of streamflow processes [PDF]

open access: yesNonlinear Processes in Geophysics, 2005
Conventional streamflow models operate under the assumption of constant variance or season-dependent variances (e.g. ARMA (AutoRegressive Moving Average) models for deseasonalized streamflow series and PARMA (Periodic AutoRegressive Moving Average ...
W. Wang   +4 more
doaj  

Factor ARMA representation of a Markov process [PDF]

open access: yesEconomics Letters, 2001
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Darolles, Serge   +2 more
openaire   +5 more sources

Volatility analysis and forecasting of vegetable prices using an ARMA‐GARCH model: An application of the CF filter and seasonal adjustment method to Korean green onions

open access: yesAgribusiness, EarlyView.
Abstract The vegetable market experiences significant price fluctuations due to the complex interplay of trend, cyclical, seasonal, and irregular factors. This study takes Korean green onions as an example and employs the Christiano–Fitzgerald filter and the CensusX‐13 seasonal adjustment methods to decompose its price into four components: trend ...
Yiyang Qiao, Byeong‐il Ahn
wiley   +1 more source

The Relationship Between Interest Rates and Agricultural Commodity Price Dynamics

open access: yesAgribusiness, EarlyView.
ABSTRACT The U.S. Federal Reserve has undertaken several interest rate interventions in the past decade. This study explores the relationship between U.S. corn and soybean prices and Federal Reserve monetary policy interventions, in the short and long run.
Zhining Sun, Ani L. Katchova
wiley   +1 more source

Statistical modelling of Zimbabwe’s international tourist arrivals using both symmetric and asymmetric volatility models

open access: yesJournal of Economic and Financial Sciences, 2019
Orientation: Modelling of international tourist arrivals’ volatility is vital for marketing, planning, policy formulation and investment purposes among others.
Delson Chikobvu, Tendai Makoni
doaj   +1 more source

The Estimation of the Order of an ARMA Process

open access: yesThe Annals of Statistics, 1980
Under general conditions strong consistency of certain estimates of the maximum lags of an autoregressive moving average process is established. A theorem on weak consistency is also proved and in certain cases where consistency does not hold the probability of over-estimation of a maximum lag is evaluated.
openaire   +2 more sources

Kullback-Leibler and Rényi divergence rate for Gaussian stationary ARMA processes comparison [PDF]

open access: yes, 2021
In signal processing, ARMA processes are widely used to model short-memory processes. In various applications, comparing or classifying ARMA processes is required. In this paper, our purpose is to provide analytical expressions of the divergence rates of
Diversi, Roberto   +2 more
core   +1 more source

The distribution of the maximum of an ARMA(1, 1) process [PDF]

open access: yesComptes Rendus. Mathématique, 2020
We give the cumulative distribution function of M n = max X
Withers, Christopher S.   +1 more
openaire   +4 more sources

Origin, evolution and biogeographic dynamics of the European rabbit (Oryctolagus cuniculus) in Southwestern Europe

open access: yesThe Anatomical Record, EarlyView.
Abstract The Pleistocene is a key period for understanding the evolutionary history and palaeobiogeography of the European rabbit (Oryctolagus cuniculus). The species was first documented in southeastern Iberia at the beginning of the Middle Pleistocene and appears to have rapidly spread throughout Southwestern Europe, where it was found in numerous ...
Maxime Pelletier
wiley   +1 more source

MCMC for Integer‐Valued ARMA processes [PDF]

open access: yesJournal of Time Series Analysis, 2006
Abstract.  The classical statistical inference for integer‐valued time‐series has primarily been restricted to the integer‐valued autoregressive (INAR) process. Markov chain Monte Carlo (MCMC) methods have been shown to be a useful tool in many branches of statistics and is particularly well suited to integer‐valued time‐series where statistical ...
Neal, Peter John, Subba Rao, Tata
openaire   +2 more sources

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