Results 101 to 110 of about 7,220 (228)

FORECASTING FRESH WATER AND MARINE FISH PRODUCTION IN MALAYSIA USING ARIMA AND ARFIMA MODELS

open access: yesMalaysian Journal of Computing, 2018
Malaysia is surrounded by sea, rivers and lakes which provide natural sources of fish for human consumption. Hence, fish is one source of protein supply to the country and fishery is a sub-sector that contribute to the national gross domestic product ...
P.J.W. Mah, N.N.M. Zali, N.A.M. Ihwal, N.Z. Azizan
doaj   +1 more source

İŞSİZLİKTE UZUN HAFIZA ETKİSİ VE HİSTERİSİZ HİPOTEZİNİN GEÇERLİLİĞİ

open access: yesCumhuriyet Üniversitesi İktisadi ve İdari Bilimler Dergisi, 2019
Ekonomilerin temel iktisadigöstergelerinden biri olan işsizlik gerek teorik gerekse ampirik literatüraçısından makro iktisadın güncel konuları arasında yer almaktadır.
İpek Yurttagüler, Sinem Kutlu
doaj  

Uma avaliação da volatilidade dos preços da soja no mercado internacional com dados de alta frequência An evaluation of the volatility of soybeans prices in the international market using high frequency data

open access: yesGestão & Produção, 2012
Neste trabalho foram avaliados os ajustes de cinco modelos para previsão da variância, utilizando-se uma série de preços de soja, uma commodity negociada na bolsa de mercadorias de Chicago (CBOT), com dados de alta frequência. Os modelos utilizados foram
Mario Domingues Simões   +3 more
doaj   +1 more source

Investigating Inflation Dynamics and Structural Change with an Adaptive ARFIMA Approach [PDF]

open access: yes
Previous models of monthly CPI inflation time series have focused on possible regime shifts, non-linearities and the feature of long memory. This paper proposes a new time series model, named Adaptive ARFIMA; which appears well suited to describe ...
Claudio Morana, Richard T. Baille
core  

Testing and Estimating Persistence in Canadian Unemployment. [PDF]

open access: yes
A vital implication of unemployment persistence applies to the Bank of Canada's disinflation policies since it adversely influences unemployment and considerably lengthens recessions.
Curtis J. Eberwein   +2 more
core  

Wavelet Covariance Matrix Structure and Bayesian-Wavelet Estimation of Autoregressive Process Parameters with Long-Term Memory

open access: yesپژوهش‌های ریاضی, 2020
Introduction The data obtained from observing a phenomenon over time is very common. One of the most popular models in time series and signal processing is the Autoregressive moving average model (ARMA).
Mahmod Afshari   +2 more
doaj  

TESTING THE LONG RANGE-DEPENDENCE FOR THE CENTRAL EASTERN EUROPEAN AND THE BALKANS STOCK MARKETS [PDF]

open access: yesAnnals of the University of Oradea: Economic Science, 2013
In this study we tested the existence of long memory in the the return series for major Central Eastern European and Balkans stock markets, using the following statistical methods: Hurst Exponent, GPH method, Andrews and Guggenberger method, Reisen ...
Pece Andreea Maria   +3 more
doaj  

Measuring core inflation in the euro area [PDF]

open access: yes
We propose a measure of core inflation which is derived from a Markov switching ARFIMA model. The Markov switching ARFIMA model generalises the standard ARFIMA model allowing mean reversion to take place with respect to a changing unconditional mean.
Morana, Claudio
core  

Network traffic prediction based on ARFIMA model

open access: yes, 2013
ARFIMA is a time series forecasting model, which is an improved ARMA model, the ARFIMA model proposed in this article is demonstrated and deduced in detail. combined with network traffic of CERNET backbone and the ARFIMA model,the result shows that,compare to the ARMA model, the prediction efficiency and accuracy has increased significantly, and not ...
Zhou, Dingding   +2 more
openaire   +2 more sources

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