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The impact of sovereign yield curve differentials on value-at-risk forecasts for foreign exchange rates
Fink, Holger Maria; Fuest, Andreas; Port, Henry - In: Risks : open access journal 6 (2018) 3, pp. 1-19
A functional ARMA-GARCH model for predicting the value-at-risk of the EURUSD exchange rate is introduced. The model … August 2005–30 September 2016. As a benchmark, we take an ARMA-GARCH and an ARMAX-GARCHX with the 2y-yield difference as the …
Persistent link: https://www.econbiz.de/10011890808
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Assessing financial stability in turbulent times : a study of generalized autoregressive conditional heteroskedasticity-type Value-at-Risk model performance in Thailand's transport...
Danai Likitratcharoen; Lucksuda Suwannamalik - In: Risks : open access journal 12 (2024) 3, pp. 1-19
of VaR approaches. This study critically evaluates the efficacy of GARCH-type VaR models within the transportation sector … GARCH-type VaR models include GARCH (1,1) VaR, ARMA (1,1)-GARCH (1,1) VaR, GARCH (1,1)-M VaR, IGARCH (1,1) VaR, EWMA VaR … surpasses GARCH-type VaR models in failure rate accuracy. Within the GARCH-type category, the EWMA VaR model exhibited superior …
Persistent link: https://www.econbiz.de/10014497424
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Financial time series forecasting using empirical mode decomposition and support vector regression
Nava, Noemi; Di Matteo, Tiziana; Aste, Tomaso - In: Risks : open access journal 6 (2018) 1, pp. 1-21
We introduce a multistep-ahead forecasting methodology that combines empirical mode decomposition (EMD) and support vector regression (SVR). This methodology is based on the idea that the forecasting task is simplified by using as input for SVR the time series decomposed with EMD. The outcomes...
Persistent link: https://www.econbiz.de/10011811500
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A hybrid model for forecasting realized volatility based on heterogeneous autoregressive model and support vector regression
Zhuo, Yue; Morimoto, Takayuki - In: Risks : open access journal 12 (2024) 1, pp. 1-16
In this study, we proposed two types of hybrid models based on the heterogeneous autoregressive (HAR) model and support vector regression (SVR) model to forecast realized volatility (RV). The first model is a residual-type model, where the RV is first predicted using the HAR model, and the...
Persistent link: https://www.econbiz.de/10014480965
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Bayesian operational risk models
Figini, Silvia; Gao, Lijun; Giudici, Paolo - In: The journal of operational risk 10 (2015) 2, pp. 45-60
Persistent link: https://www.econbiz.de/10011298859
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Approximations of value-at-risk as an extreme quantile of a random sum of heavy-tailed random variables
Hannah, Lincoln; Puza, Borek - In: The journal of operational risk 10 (2015) 2, pp. 1-21
Persistent link: https://www.econbiz.de/10011298869
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An academic response to Basel 3.5
Embrechts, Paul; Puccetti, Giovanni; Rüschendorf, Ludger; … - In: Risks : open access journal 2 (2014) 1, pp. 25-48
Recent crises in the financial industry have shown weaknesses in the modeling of Risk-Weighted Assets (RWAs). Relatively minor model changes may lead to substantial changes in the RWA numbers. Similar problems are encountered in the Value-at-Risk (VaR)-aggregation of risks. In this article, we...
Persistent link: https://www.econbiz.de/10010338097
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Nested MC-based risk measurement of complex portfolios : acceleration and energy efficiency
Desmettre, Sascha; Korn, Ralf; Varela, Javier Alejandro; … - In: Risks : open access journal 4 (2016) 4, pp. 1-35
Risk analysis and management currently have a strong presence in financial institutions, where high performance and energy efficiency are key requirements for acceleration systems, especially when it comes to intraday analysis. In this regard, we approach the estimation of the widely-employed...
Persistent link: https://www.econbiz.de/10011556579
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The impact of systemic risk on the diversification benefits of a risk portfolio
Busse, Marc; Dacorogna, Michel M.; Katz, Marie - In: Risks : open access journal 2 (2014) 3, pp. 260-276
Risk diversification is the basis of insurance and investment. It is thus crucial to study the effects that could limit it. One of them is the existence of systemic risk that affects all of the policies at the same time. We introduce here a probabilistic approach to examine the consequences of...
Persistent link: https://www.econbiz.de/10010399713
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Measurement of operational risk regulatory capital in the banking sector : developed countries versus emerging markets
Hassanein, Medhat; Bouaddi, Mohammed; Karim, Talha - In: The journal of operational risk 16 (2021) 1, pp. 12-43
Persistent link: https://www.econbiz.de/10013168027