Results 1 to 10 of about 467 (180)

Modeling Long Memory Volatilities of Nigeria Selected Macro Economic Variables with Arfima and Arfima Figarch

open access: yesCumhuriyet Science Journal
The research delved into analysing the stochastic characteristics of Nigeria's Real GDP, the exchange rate of the Naira to US Dollar, and the inflation rate employing Autoregressive fractionally integrated moving average (ARFIMA) and the Autoregressive ...
Ayoade Adewole
doaj   +4 more sources

تحسين التنبؤ باستخدام الجمع بين نماذج ARFIMA و GARCH (دراسة تطبيقية) Improving Forecasting Using a Combination of ARFIMA and GARCH Models ( An Applied Study). [PDF]

open access: yesالمجلة العلمية للدراسات والبحوث المالية والتجارية
تهدف هذه الدراسة إلى بناء نموذج هجين يجمع بين نماذج ARFIMA و GARCH لتوقع أسعار الذهب الشهرية خلال الفترة من 2010 إلى 2025، نظرًا لما تتسم به هذه السلسلة من تقلبات وتعقيد، أظهرت اختبارات ADF وPP   أن السلسلة غير ساكنة، كما أكدت تحليلات الذاكرة الطويلة مثل
فاطمة الزهراء ابراهيم ابراهيم اللاوندي   +2 more
doaj   +1 more source

A Forecasting Model for Japan's Unemployment Rate [PDF]

open access: yesEurasian Journal of Business and Economics, 2010
This note aims to achieve a parsimonious fractionally-integrated autoregressive and moving average (ARFIMA) model for recent time series data of Japan's unemployment rate. A brief review of the ARFIMA model is provided, leading to econometric modeling of
Takamitsu KURITA
doaj  

Inflation Dynamics in the ABC (Argentina, Brazil and Chile) countries

open access: yesEnsayos de Política Económica, 2020
Este trabajo evalúa la inercia y persistencia de la inflación y sus componentes para Argentina (dos períodos), Brasil y Chile utilizando modelos estacionales y fraccionalmente integrados autorregresivo de promedios móviles (modelo S-ARFIMA).
Fernando Zarzosa Valdivia
doaj   +1 more source

Evaluating the Effectiveness of GARCH Models in the Estimation of Systematic Risk in listed companies of the Tehran Stock Exchange [PDF]

open access: yesJournal of Asset Management and Financing, 2020
The stock market of each country, in addition to reflecting its economic structure, is considered as an important source of capital Circulation of that country.
nemat rastgoo, Hossein panahian
doaj   +1 more source

Peramalan Kurs Jual Uang Kertas Mata Uang Singapore Dollar (SGD) terhadap Rupiah Menggunakan Model ARFIMA (Autoregressive Fractionally Integrated Moving Average)

open access: yesKubik, 2015
Model ARFIMA (Autoregressive Fractionally Integrated Moving Average) merupakan pengembangan dari model ARIMA yang pertama kali dikenalkan oleh Granger dan Joyeux (1980). Sedangkan Hosking (1981) memperkenalkan sifat jangka panjang (long memory) pada data
Rini Cahyandari, Rima Erviana
doaj   +1 more source

Wavelet based deseasonalization for modelling and forecasting of daily discharge series considering long range dependence

open access: yesJournal of Hydrology and Hydromechanics, 2014
Short term streamflow forecasting is important for operational control and risk management in hydrology. Despite a wide range of models available, the impact of long range dependence is often neglected when considering short term forecasting.
Szolgayová Elena   +3 more
doaj   +1 more source

Evaluation of Dual Long Memory Properties with Emphasizing the Skewed and Fat-Tail Distribution: Evidence from Tehran Stock Exchange [PDF]

open access: yesMuṭāli̒āt-i Mudīriyyat-i Ṣan̒atī, 2014
This paper investigates the presence of long memory in the Tehran stock market, using the ARFIMA, GPH, GSP and FIGARCH models. The data set consists of daily returns, and long memory tests are carried out both for the returns and volatilities of TEPIX ...
Mohammad Javad Mohagheghnia   +3 more
doaj  

Estimation Parameter d in Autoregressive Fractionally Integrated Moving Average Model in Predicting Wind Speed

open access: yesInPrime, 2019
Wind speed is one of the most important weather factors in the landing and takeoff process of airplane because it can affect the airplane's lift. Therefore, we need a model to predict the wind speed in an area.
Devi Ila Octaviyani   +2 more
doaj   +1 more source

Análisis de contagios SARS COV-2 por medio de herramientas de series de tiempo

open access: yesDictamen Libre
El presente artículo propone analizar y desarrollar herramientas de series de tiempo con las cuales se pueda estimar la curva de contagios de SARS-COV2 en países de Latinoamérica.
David Santiago Álzate Vélez   +3 more
doaj   +1 more source

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