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A multiple-sample semiparametric density ratio model, which is equivalent to a generalized logistic regression model, can be constructedby multiplicative exponential distortions of a reference distribution. Distortion functions are assumed to be nonnegative and of a known finite-dimensional...
Persistent link: https://www.econbiz.de/10009450972
This thesis focuses on two statistical problems related to credit scoring. In credit scoring of individuals, two classes are distinguished, namely low and high risk individuals (the so-called "good" and "bad" risk classes). Firstly, we suggest a measure which may be used to study the nature of a...
Persistent link: https://www.econbiz.de/10009455950
Persistent link: https://www.econbiz.de/10003637458
practitioners. The GARCH model has been exceptionally successful in this area. Our approach, the minimally cross …-entropic conditional density (MCECD) model, is a generalization of GARCH(1,1) which can cope with conditional skewness and kurtosis. It is …
Persistent link: https://www.econbiz.de/10009434643
on Giamouridis and Vrontos (2007), a broad set of multivariate GARCH models, as well as, the simpler exponentially … weighted moving average (EWMA) estimator of RiskMetrics (1996) are considered. It is found that, while multivariate GARCH … of range, regime switching, nonlinear filtration, and GARCH frameworks. Any incremental improvement in the performance of …
Persistent link: https://www.econbiz.de/10009440952
(Baltijos Šalys). Pirmojoje darbo dalyje išnagrinėti apibendrinti autoregresiniai sąlyginio heteroskedastiškumo modeliai (GARCH …), kurie dažniausiai yra taikomi nestacionarių laiko eilučių prognozavimui. Aptarta GARCH metodologija, pateikiami netiesinių … GARCH modelių pavyzdžiai. Taip pat išanalizuoti metodai, kuriais remiantis galime spręsti apie pasirinkto prognozavimo …
Persistent link: https://www.econbiz.de/10009478751
participants, different currency instruments traded, and a 24 hour timeframe. Statistical approaches such as ARIMA and GARCH models ….0 statistical package. 8 ARIMA and 8 GARCH variants were estimated for each currency pair. Models with at least one statistically …, out-of-sample forecasting was carried out for USD/EUR and GBP/JPY currency pairs. Forecasting results show that GARCH …
Persistent link: https://www.econbiz.de/10009478870
Keliami uždaviniai: GARCH modelių klasės taikymas ilgo periodo finansiniams duomenims: modelių parametrų paieška, jų … finansinių laiko eilučių. Viena modelių klasė, kuri atvaizduoja šį elgesį yra vadinama Dalinai Integruotu GARCH (Baillie …, Bollerslev ir Mikkelsen 1996). Dalinės integracijos idėją pateikė ir ją pritaikė GARCH struktūrai Granger (1980) ir Hosking (1981 …
Persistent link: https://www.econbiz.de/10009479019
erheblichen Fehlbewertungen kommen wie in einer Monte-Carlo Studie gezeigt wird. Ferner wird ein Markov-Switching GARCH …-Modell entwickelt, welches verschiedene GARCH Variationen in den einzelnen Regimen zulässt. So sind erstmals auch Wechsel der … Spezifikation in den einzelnen Regimen, wie z.B. EGARCH-GARCH Modelle möglich. Diese neue Modellklasse wird genutzt, um die …
Persistent link: https://www.econbiz.de/10009454749