Results 31 to 40 of about 2,268 (179)

On the integrated behaviour of non-stationary volatility in stock markets [PDF]

open access: yes, 2006
This paper analyses the behaviour of volatility for several international stock market indexes, namely the SP 500 (USA), the Nikkei (Japan), the PSI 20 (Portugal), the CAC 40 (France), the DAX 30 (Germany), the FTSE 100 (UK), the IBEX 35 (Spain) and the ...
Andreia Dionisio   +17 more
core   +5 more sources

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  

Structural Breaks and Long Memory Property in Korean Won Exchange Rates: Adaptive FIGARCH Model

open access: yesEast Asian Economic Review, 2011
This paper explores the issue of structural breaks and long memory property in the conditional variance process of the Korean exchange rates. To analyze the above in detail, this paper examines the dynamics of the structural breaks and the long memory in
Young Wook Han
doaj   +1 more source

Stochastic equilibrium of free trade under a FIGARCH volatility

open access: yes, 2023
Abstract Free trade for some economists gains so much attention, the horrible thing is though when a nation doesn't knit relations with other countries because this would harm the future gains almost if land or property is rare: what i had tried to mention is the importance of free trade as far as consumption is concerned, if the national ...
openaire   +1 more source

Fractional derivatives of random walks: Time series with long-time memory

open access: yes, 2008
We review statistical properties of models generated by the application of a (positive and negative order) fractional derivative operator to a standard random walk and show that the resulting stochastic walks display slowly-decaying autocorrelation ...
G. Samorodnitsky   +10 more
core   +1 more source

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   +1 more source

A Hybrid LSTM Neural Network Approach for Modeling Periodical Long-Memory Characteristics in Financial Energy Index Time Series [PDF]

open access: yesMathematics and Modeling in Finance
Forecasting financial market volatility has always been a major challenge in economics and financial engineering. In this study, a hybrid approach based on FIGARCH and PLM-GARCH models combined with Long Short-Term Memory (LSTM) neural networks is ...
Minou Yari   +2 more
doaj   +1 more source

Contagion in major CDS markets for the post Global Financial Crisis: A multivariate AR-FIGARCH-cDCC approach

open access: yesArgomenti: Rivista di Economia, Cultura e Ricerca Sociale, 2020
We explore the time-varying conditional correlations of the Sovereing CDS spread returns for Germany, France, China and Japan against USA. We employ a cDCC-AR-FIGARCH model in order to capture potential contagion effects between the markets during the ...
Konstantinos Tsiaras, Theodore Simos
doaj   +1 more source

Enhanced state-space estimation of long-memory commodity volatility using the Unscented Kalman Filter and variational Bayes method for non-linear modeling

open access: yesFrontiers in Applied Mathematics and Statistics
This study addresses the limitations of the Kalman Filter (KF) by extending the application of the Unscented Kalman Filter (UKF) and the variational Bayes method (VBM) for estimating long-memory (LM) volatility models.
Kisswell Basira   +2 more
doaj   +1 more source

Does the Oil Market Volatility have Long Run Memory? [PDF]

open access: yesPizhūhishnāmah-i Iqtiṣād-i Inirzhī-i Īrān, 2011
This paper has examined the long memory of oil market volatility. For this purpose, the paper has employed different types of long run ARCH models including FIGARCH-BBM, FIGARCH-chung, FIEGARCH, FIAPARCH-BBM and FIAPARCH-chung and short run ones ...
Seed Rasekhi, Amir Khanalipour
doaj  

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