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Jurnal Institusi
GARCH-M MODEL AND THE BEHAVIOR OF RISK-RETURN RELATIONSHIP IN INDONESIA STOCK MARKET
Jurnal Ilmiah Ekonomi Dan Bisnis; Vol. 19 No. 2 (2022); 101-109
This study examines the risk-return trade-off and volatility behaviour in Indonesia stock market. As the analytical tool this study uses GARCH-M model with symmetric GARCH(1,1). To obtain more reliable results, this study takes daily and we...
Jurnal Institusi
PREDIKSI HARGA DAN VOLATILITAS EMAS DUNIA HARIAN: PERBANDINGAN MODEL GARCH DAN LONG SHORT-TERM MEMORY
ZONAsi: Jurnal Sistem Informasi; Vol. 7 No. 2 (2025): Publikasi artikel ZONAsi: Jurnal Sistem Informasi Periode Mei 2025; 466 - 475
Penelitian ini bertujuan untuk membandingkan kinerja model Long Short-Term Memory (LSTM) dan Generalized Autoregressive Conditional Heteroskedasticity (GARCH) dalam memprediksi harga dan volatilitas emas harian. Data harga emas dunia periode 2018–2...
PubMed
Modeling Markov Switching ARMA-GARCH Neural Networks Models and an Application to Forecasting Stock Returns
ScientificWorldJournal
The study has two aims. The first aim is to propose a family of nonlinear GARCH models that incorporate fractional integration and asymmetric power properties to MS-GARCH processes. The second purpose of the study is to augment the MS-GARCH type mode...
PubMed
A network autoregressive model with GARCH effects and its applications
PLoS One
In this study, a network autoregressive model with GARCH effects, denoted by NAR-GARCH, is proposed to depict the return dynamics of stock market indices. A GARCH filter is employed to marginally remove the GARCH effects of each index, and the NAR mo...
PubMed
Novel grey wolf optimizer based parameters selection for GARCH and ARIMA models for stock price prediction
PeerJ Comput Sci
Stock price data often exhibit nonlinear patterns and dynamics in nature. The parameter selection in generalized autoregressive conditional heteroskedasticity (GARCH) and autoregressive integrated moving average (ARIMA) models is challenging due to s...
PubMed
New practice for investors in Chinese stock market: From perspective of fractionally integrated realized GARCH model
Heliyon
In this paper, based on the Realized GARCH model, the fractional integration Realized GARCH model is proposed by combining long memory parameters with conditional variance and replacing the original realized measure with the realized measure obtained...
PubMed
Heteroscedasticity effects as component to future stock market predictions using RNN-based models
PLoS One
Heteroscedasticity effects are useful for forecasting future stock return volatility. Stock volatility forecasting provides business insight into the stock market, making it valuable information for investors and traders. Predicting stock volatility ...
PubMed
Risk contagion of COVID-19 to oil prices: A Markov switching GARCH and PCA approach
PLoS One
The COVID-19 pandemic and its impact on crude oil prices created additional risks throughout the financial industry. To contribute to the ongoing debates, this paper empirically examined the risk contagion of COVID-19 to oil prices by incorporating a...
PubMed
Modelling and forecasting of growth rate of new COVID-19 cases in top nine affected countries: Considering conditional variance and asymmetric effect
Chaos Solitons Fractals
COVID-19 pandemic has affected more than a hundred fifty million people and killed over three million people worldwide over the past year. During this period, different forecasting models have tried to forecast time path of COVID-19 pandemic. Unlike ...
PubMed
Enhancing stock volatility prediction with the AO-GARCH-MIDAS model
PLoS One
Research has substantiated that the presence of outliers in data usually introduces additional errors and biases, which typically leads to a degradation in the precision of volatility forecasts. However, correcting outliers can mitigate these adverse...
PubMed
Refining value-at-risk estimates using a Bayesian Markov-switching GJR-GARCH copula-EVT model
PLoS One
In this paper, we propose a model for forecasting Value-at-Risk (VaR) using a Bayesian Markov-switching GJR-GARCH(1,1) model with skewed Student’s-t innovation, copula functions and extreme value theory. A Bayesian Markov-switching GJR-GARCH(1,1) m...
PubMed
Modeling Saudi stock index returns and volatility: a dual approach using GARCH and neural networks
Front Artif Intell
The financial markets are the drivers of economic growth as they organize savings, bring in foreign investment, and they efficiently allocate resources. The Tadawul is the largest stock market in the GCC, which is highly impacted by prices of oil and...
PubMed
Traffic Volatility Forecasting Using an Omnibus Family GARCH Modeling Framework
Entropy (Basel)
Traffic volatility modeling has been highly valued in recent years because of its advantages in describing the uncertainty of traffic flow during the short-term forecasting process. A few generalized autoregressive conditional heteroscedastic (GARCH)...
PubMed
South African inflation modelling using bootstrapped long short-term memory methods
SN Bus Econ
Inflation is a critical economic series, and proper targeting is required for a stable economy. With the current economic conditions that the world has faced as a result of COVID-19, understanding the effects of this on economies is critical because ...
PubMed
LSTM–GARCH Hybrid Model for the Prediction of Volatility in Cryptocurrency Portfolios
Comput Econ
In the present work, the volatility of the leading cryptocurrencies is predicted through generalised autoregressive conditional heteroskedasticity (GARCH) models, multilayer perceptron (MLP), long short-term memory (LSTM), and hybrid models of the t...
PubMed
Study of the cross-market effects of Brexit based on the improved symbolic transfer entropy GARCH model—An empirical analysis of stock–bond correlations
PLoS One
In this paper, we study the cross-market effects of Brexit on the stock and bond markets of nine major countries in the world. By incorporating information theory, we introduce the time-varying impact weights based on symbolic transfer entropy to imp...
PubMed
Estimation and tests for power-transformed and threshold GARCH models()
J Econom
Consider a class of power-transformed and threshold GARCH [Formula: see text] (PTTGRACH [Formula: see text]) model, which is a natural generalization of power-transformed and threshold GARCH(1,1) model in Hwang and Basawa [2004. Stationarity and mome...
PubMed
Symmetric and asymmetric GARCH estimations of the impact of oil price uncertainty on output growth: evidence from the G7
Lett Spat Resour Sci
Crude oil is an essential source of energy. Without access to energy, output growth is impossible. As a result of this link, volatility in oil prices has the ability to induce fluctuations in the output of both developed and developing economies. Mor...
PubMed
Estimation of the parameters of symmetric stable ARMA and ARMA–GARCH models
J Appl Stat
In this article, we first propose the modified Hannan–Rissanen Method for estimating the parameters of autoregressive moving average (ARMA) process with symmetric stable noise and symmetric stable generalized autoregressive conditional heteroskedas...
PubMed
How to Promote the Performance of Parametric Volatility Forecasts in the Stock Market? A Neural Networks Approach
Entropy (Basel)
This study uses the fourteen stock indices as the sample and then utilizes eight parametric volatility forecasting models and eight composed volatility forecasting models to explore whether the neural network approach and the settings of leverage eff...