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An empirically founded and widely established driving force in opinion dynamics is homophily i.e. the tendency of "birds of a feather" to "flock together". The closer our opinions are the more likely it is that we will interact and converge. Models using these assumptions are called bounded...
Persistent link: https://www.econbiz.de/10012956032
The ability to adequately model risks is crucial for insurance companies. The method of "Copula-based hierarchical risk …
Persistent link: https://www.econbiz.de/10013021225
I present a procedure for yield curve simulation using historical copulas to model the curve dynamics (bending and steepening). This separates the modelling of curve dynamics from that of individual tenor points. Using this, the model is able to capture a swaption volatility surface across all...
Persistent link: https://www.econbiz.de/10013024231
vector based on weighted Cramér-von Mises functionals of the empirical copula process. The weights act as a tuning parameter …. The greatest gain in power is found to occur when weights are set proportional to true deviations from independence copula …
Persistent link: https://www.econbiz.de/10013026399
copula-based approach for modeling correlated continuous uncertainties to the representation of correlated discrete …
Persistent link: https://www.econbiz.de/10013032679
Although copula modeling has been applied in a growing number of financial applications, high-dimensional copula … modeling is still in its early stages. Vine copula modeling not only has the advantage of extending to higher dimensions easily … estimation of the dependence structures through vine copula modeling, we empirically investigate systemic risk in 10 S&P 500 …
Persistent link: https://www.econbiz.de/10013033081
In this paper we present a forecasting method for time series using copula-based models for multivariate time series …
Persistent link: https://www.econbiz.de/10013035346
Clayton canonical vine copula (CVC) to model asymmetric dependence, we produce a measure of systemic risk across a portfolio …
Persistent link: https://www.econbiz.de/10013035644
We construct a copula from the skew t distribution of Sahu, Dey & Branco (2003). This copula can capture asymmetric and … effectively. However, it is difficult to estimate the copula model by maximum likelihood when the multivariate dimension is high … distributions and copula are estimated jointly. We therefore propose a Bayesian approach that overcomes all these problems. The …
Persistent link: https://www.econbiz.de/10013038598
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