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Generalized random tessellations, their properties, simulation and applications
Jahn, Daniel ; Beneš, Viktor (vedoucí práce)
The past few years have seen advances in modelling of polycrystalline materi- als using parametric tessellation models from stochastic geometry. A promising class of tessellations, the Gibbs-type tessellation, allows the user to specify a great variety of properties through the energy function. This text focuses solely on tetrahedrizations, a three-dimensional tessellation composed of tetrahedra. The existing results for two-dimensional Delaunay triangulations are extended to the case of three-dimensional Laguerre tetrahedrization. We provide a proof of existence, a C++ implementation of the MCMC simulation and estimation of the models parameters through maximum pseudolikelihood. 1
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Generalized random tessellations, their properties, simulation and applications
Jahn, Daniel ; Beneš, Viktor (vedoucí práce)
The past few years have seen advances in modelling of polycrystalline materi- als using parametric tessellation models from stochastic geometry. A promising class of tessellations, the Gibbs-type tessellation, allows the user to specify a great variety of properties through the energy function. This text focuses solely on tetrahedrizations, a three-dimensional tessellation composed of tetrahedra. The existing results for two-dimensional Delaunay triangulations are extended to the case of three-dimensional Laguerre tetrahedrization. We provide a proof of existence, a C++ implementation of the MCMC simulation and estimation of the models parameters through maximum pseudolikelihood. 1
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Generalized random tessellations, their properties, simulation and applications
Jahn, Daniel ; Beneš, Viktor (vedoucí práce) ; Rataj, Jan (oponent)
The past few years have seen advances in modelling of polycrystalline materi- als using parametric tessellation models from stochastic geometry. A promising class of tessellations, the Gibbs-type tessellation, allows the user to specify a great variety of properties through the energy function. This text focuses solely on tetrahedrizations, a three-dimensional tessellation composed of tetrahedra. The existing results for two-dimensional Delaunay triangulations are extended to the case of three-dimensional Laguerre tetrahedrization. We provide a proof of existence, a C++ implementation of the MCMC simulation and estimation of the models parameters through maximum pseudolikelihood. 1
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Implied volatility modelling of options
Jahn, Daniel ; Kopa, Miloš (vedoucí práce) ; Hendrych, Radek (oponent)
Tato práce prezentuje analýzu podmíněného lokálního polynomiálního odhadu použitého za účelem získání tzv. implied volatility smile z opčních dat. Optimalizační podmínka, odvozená ze ,,state price density``, zaručuje splnění bezarbitrážní podmínky. Analýza obsahuje popis a vyhodnocení role různých parametrů, například stupně polynomu, typu použitého jádra a jeho šířky (bandwidth) na výsledný tvar IV smile. Práce navrhuje dva různé postupy. První postup se pokouší zachytit složitější chování opcí tzv. mimo peníze (,,out-of-the-money``). Druhý postup se zaměřuje na kvalitní proložení křivky daty a na~vytvoření hladké state price density. Powered by TCPDF (www.tcpdf.org)
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