Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "time-varying volatility" wg kryterium: Temat

  Lista filtrów
Wyrównaj
    Wyświetlanie 1-4 z 4
    Tytuł:
    Bayesian Analysis for Hybrid MSF-SBEKK Models of Multivariate Volatility
    Autorzy:
    Osiewalski, Jacek
    Pajor, Anna
    Powiązania:
    https://bibliotekanauki.pl/articles/483307.pdf
    Data publikacji:
    2009
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Bayesian econometrics
    Gibbs sampling
    time-varying volatility
    multivariate GARCH processes
    multivariate SV processes
    Opis:
    The aim of this paper is to examine the empirical usefulness of two new MSF - Scalar BEKK(1,1) models of n-variate volatility. These models formally belong to the MSV class, but in fact are some hybrids of the simplest MGARCH and MSV specifications. Such hybrid structures have been proposed as feasible (yet non-trivial) tools for analyzing highly dimensional financial data (large n). This research shows Bayesian model comparison for two data sets with n = 2, since in bivariate cases we can obtain Bayes factors against many (even unparsimonious) MGARCH and MSV specifications. Also, for bivariate data, approximate posterior results (based on preliminary estimates of nuisance matrix parameters) are compared to the exact ones in both MSF-SBEKK models. Finally, approximate results are obtained for a large set of returns on equities (n = 34).
    Źródło:
    Central European Journal of Economic Modelling and Econometrics; 2009, 1, 2; 179-202
    2080-0886
    2080-119X
    Pojawia się w:
    Central European Journal of Economic Modelling and Econometrics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    On Sensitivity of Inference in Bayesian MSF-MGARCH Models
    Autorzy:
    Osiewalski, Jacek
    Pajor, Anna
    Powiązania:
    https://bibliotekanauki.pl/articles/2076087.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Bayesian econometrics
    Gibbs sampling
    time-varying volatility
    multivariate GARCH processes
    multivariate SV processes
    Opis:
    Hybrid MSV-MGARCH models, in particular the MSF-SBEKK specification, proved useful in multivariate modelling of returns on financial and commodity markets. The initial MSF-MGARCH structure, called LNMSF-MGARCH here, is obtained by multiplying the MGARCH conditional covariance matrix Ht by a scalar random variable gt such that {ln gt, t ∈ Z} is a Gaussian AR(1) latent process with auto-regression parameter ϕ. Here we also consider an IG-MSF-MGARCH specification, which is a hybrid generalisation of conditionally Student t MGARCH models, since the latent process {gt} is no longer marginally log-normal (LN), but for ϕ = 0 it leads to an inverted gamma (IG) distribution for gt and to the t-MGARCH case. If ϕ 6= 0, the latent variables gt are dependent, so (in comparison to the t-MGARCH specification) we get an additional source of dependence and one more parameter. Due to the existence of latent processes, the Bayesian approach, equipped with MCMC simulation techniques, is a natural and feasible statistical tool to deal with MSF-MGARCH models. In this paper we show how the distributional assumptions for the latent process together with the specification of the prior density for its parameters affect posterior results, in particular the ones related to adequacy of the t-MGARCH model. Our empirical findings demonstrate sensitivity of inference on the latent process and its parameters, but, fortunately, neither on volatility of the returns nor on their conditional correlation. The new IG-MSF-MGARCH specification is based on a more volatile latent process than the older LN-MSF-MGARCH structure, so the new one may lead to lower values of ϕ – even so low that they can justify the popular t-MGARCH model.
    Źródło:
    Central European Journal of Economic Modelling and Econometrics; 2019, 3; 173-197
    2080-0886
    2080-119X
    Pojawia się w:
    Central European Journal of Economic Modelling and Econometrics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Modelling and Forecasting WIG20 Daily Returns
    Autorzy:
    Amado, Cristina
    Silvennoinen, Annastiina
    Teräsvirta, Timo
    Powiązania:
    https://bibliotekanauki.pl/articles/2076424.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    autoregressive conditional heteroskedasticity
    forecasting volatility
    modelling volatility
    multiplicative time-varying GARCH
    smooth transition
    Opis:
    The purpose of this paper is to model daily returns of the WIG20 index. The idea is to consider a model that explicitly takes changes in the amplitude of the clusters of volatility into account. This variation is modelled by a positive-valued deterministic component. A novelty in specification of the model is that the deterministic component is specified before estimating the multiplicative conditional variance component. The resulting model is subjected to misspecification tests and its forecasting performance is compared with that of commonly applied models of conditional heteroskedasticit
    Źródło:
    Central European Journal of Economic Modelling and Econometrics; 2017, 3; 173-200
    2080-0886
    2080-119X
    Pojawia się w:
    Central European Journal of Economic Modelling and Econometrics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Badanie wpływu indeksów zmienności na zmiany współzależności pomiędzy wybranymi rynkami finansowymi
    An influence analysis of volatility indices on interdependence changes between selected financial markets
    Autorzy:
    Czapkiewicz, Anna
    Jamer, Paweł
    Powiązania:
    https://bibliotekanauki.pl/articles/425098.pdf
    Data publikacji:
    2016
    Wydawca:
    Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
    Tematy:
    hidden Markov model
    time-varying transition probability
    stock exchange
    volatility indices
    interdependence analysis
    Opis:
    The study of interdependence and the strength of the relationship between finan-cial time series is a quite important area in the financial literature. Hence we discussed the relationships between the main stock indices. The multivariate distributions of returns we modelled basing on copula functions approach. In order to obtain some dynamics of multi-variate distributions we applied the hidden Markov chain. Additionally we assumed that the transition matrix of the Markov chain was dependent on some exogenous variables. The study shows that the volatility indices VIX and VSTOXX which were taken as exogenous variables improved model efficiency.
    Źródło:
    Econometrics. Ekonometria. Advances in Applied Data Analytics; 2016, 3 (53); 87-101
    1507-3866
    Pojawia się w:
    Econometrics. Ekonometria. Advances in Applied Data Analytics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

      Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies