Results 91 to 100 of about 2,966 (203)
D-vine copula based quantile regression and the simplifying assumption for vine copulas [PDF]
, 2017 In the first part of this thesis we propose a novel semiparametric approach to perform quantile regression using D-vine copulas, a subclass of the flexible class of vine copula models. Various applications and the extension to discrete data are presented.
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Stress Testing German Industry Sectors: Results from a Vine Copula Based Quantile Regression
Risks, 2017 Measuring interdependence between probabilities of default (PDs) in different industry sectors of an economy plays a crucial role in financial stress testing. Thereby, regression approaches may be employed to model the impact of stressed industry sectors
Matthias Fischer +3 more
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Modelling international financial returns with a multivariate regime switching copula [PDF]
In order to capture observed asymmetric dependence in international financial returns, we construct a multivariate regime-switching model of copula. We model dependence with one Gaussian and one canonical vine copula regime.
Alfonso , VALDESOGO +2 more
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Contributions to Vine-Copula Modeling
, 2022 Regular vine-copula models (R-vines) are a powerful statistical tool for modeling thedependence structure of multivariate distribution functions. In particular, they allow modelingdierent types of dependencies among random variables independently of their marginaldistributions, which is deemed the most valued characteristic of these models.
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Learning Vine Copula Models for Synthetic Data Generation
Proceedings of the AAAI Conference on Artificial Intelligence, 2019 A vine copula model is a flexible high-dimensional dependence model which uses only bivariate building blocks. However, the number of possible configurations of a vine copula grows exponentially as the number of variables increases, making model selection a major challenge in development.
Sun, Yi +2 more
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Spatial Dependence in Wind and Optimal Wind Power Allocation: A Copula Based Analysis [PDF]
The investment decision on the placement of wind turbines is, neglecting legal formalities, mainly driven by the aim to maximize the expected annual energy production of single turbines.
Grothe, Oliver, Schnieders, Julius
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Copula Modeling of COVID-19 Excess Mortality
RisksCOVID-19’s effects on mortality are hard to quantify. Issues with attribution can cause problems with resulting conclusions. Analyzing excess mortality addresses this concern and allows for the analysis of broader effects of the pandemic.
Jonas Asplund, Arkady Shemyakin
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A Bivariate Copula–Driven Multi-State Model for Statistical Analysis in Medical Research
MathematicsWe develop and evaluate a copula-based multistate model for illness–death processes with dependent transition times. The framework couples Cox proportional hazards models for the marginal transition intensities with Archimedean copulas to capture ...
Hugo Brango +2 more
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Finansal bağımlılık analizi: Vine ve CD Vine Copula yaklaşımları
, 2021 Bu çalışma giriş, önceki çalışmalar, materyal metod, bulgular ve sonuç olmak üzere beş bölümden oluşmaktadır. Birinci bölümde copula fonksiyonunun bölümleri ve önemi hakkında bilgi verilmiştir. İkinci bölümde copula fonksiyonlarının özellikle finansal alanda yapmış olduğu çalışmalar hakkında bilgi verilmiştir.
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Design flood estimation of cascade reservoirs based on vine-copula flood regional composition
Journal of Hydrology: Regional StudiesStudy region: The study region is the Yalong River basin, the largest tributary of the Jinsha River in China. Study focus: The most likely flood regional composition (MLFRC) method has been widely used to estimate the design flood of cascade reservoirs ...
Sirui Zhong +4 more
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