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extremes of a bivariate distribution. Copulae can separate the problem of estimating a multidimensional distribution into the … estimation of the marginal distributions and the dependence between the onedimensional random variables. Therefore, copulae are … presented and compared in a simulation study for various distributions and copulae. Furthermore, an introduction into bivariate …
Persistent link: https://www.econbiz.de/10009467004
We show that the distribution of any portfolio whose components jointly follow a location-scale mixture of normals can be characterised solely by its mean, variance and skewness. Under this distributional assumption, we derive the mean-variance-skewness frontier in closed form, and show that it...
Persistent link: https://www.econbiz.de/10012530253
En este documento analizamos la correlación lineal y la dependencia de colas entre los fondos de cobertura denominados market neutral y la cartera de mercado condicionado en el ciclo económico. Documentamos que la baja correlación entre estos fondos y el índice S&P 500 resulta de la...
Persistent link: https://www.econbiz.de/10012693219
-response choice models. This is achieved by adopting different copula-based methodologies, which offer flexible dependency structures … methodology to capture the social dependency (or correlation) across observational units. In particular, a clustered copula …
Persistent link: https://www.econbiz.de/10009429372
copula based joint discrete multinomial-duration model of choice accommodating the two dimensions of work related choices …-education, responsibility for child-care, family ties act as driving forces for adopting telecommuting. The sign of the Gaussian copula …
Persistent link: https://www.econbiz.de/10009429390
that the Student copula was more appropriate for drought analysis in the selected area. Drought probabilities and return … periods were calculated and analyzed based on the four-dimensional copula. …
Persistent link: https://www.econbiz.de/10009430735
This thesis presents a class of graphical models for directly representing the joint cumulative distribution function (CDF) of many random variables, called cumulative distribution networks (CDNs). Unlike graphical models for probability density and mass functions, in a CDN, the marginal...
Persistent link: https://www.econbiz.de/10009455298
leverages the theory of copula,combined with a probabilistic framework from the machine learning community, to produce a … versatile tool for multiple time-series analysis. I coined this new model Kernel-based Copula Processes (KCPs). Under the new … long-range dependency can be captured by a copula function. The copula function separates the marginal behavior and serial …
Persistent link: https://www.econbiz.de/10009455329
This dissertation investigates the implications of using the Advanced Measurement Approaches (AMA) as a method to assess operational risk capital charges for banks and insurance companies within Basel II paradigms and with regard to U.S. regulations. Operational risk has become recognized as a...
Persistent link: https://www.econbiz.de/10009463409
Persistent link: https://www.econbiz.de/10009464063