Search Results for author: Claudia Czado

Found 9 papers, 2 papers with code

Assessing univariate and bivariate risks of late-frost and drought using vine copulas: A historical study for Bavaria

no code implementations16 Oct 2023 Marija Tepegjozova, Benjamin F. Meyer, Anja Rammig, Christian S. Zang, Claudia Czado

In light of climate change's impacts on forests, including extreme drought and late-frost, leading to vitality decline and regional forest die-back, we assess univariate drought and late-frost risks and perform a joint risk analysis in Bavaria, Germany, from 1952 to 2020.

regression

Vine Copula based portfolio level conditional risk measure forecasting

1 code implementation19 Aug 2022 Emanuel Sommer, Karoline Bax, Claudia Czado

Accurately estimating risk measures for financial portfolios is critical for both financial institutions and regulators.

On the Observability of Gaussian Models using Discrete Density Approximations

no code implementations17 Aug 2022 Ariane Hanebeck, Claudia Czado

In the first step of the proposed algorithm, the discrete density approximations are used to generate a single representative design observation vector to test for observability.

Bivariate vine copula based regression, bivariate level and quantile curves

no code implementations5 May 2022 Marija Tepegjozova, Claudia Czado

We construct bivariate (conditional) quantiles using the level curves of vine copula based bivariate regression model.

regression valid

Environmental, Social, Governance scores and the Missing pillar -- Why does missing information matter?

no code implementations29 Jun 2021 Özge Sahin, Karoline Bax, Claudia Czado, Sandra Paterlini

Environmental, Social, and Governance (ESG) scores measure companies' performance concerning sustainability and societal impact and are organized on three pillars: Environmental (E), Social (S), and Governance (G).

ESG, Risk, and (Tail) Dependence

no code implementations15 May 2021 Karoline Bax, Özge Sahin, Claudia Czado, Sandra Paterlini

While environmental, social, and governance (ESG) trading activity has been a distinctive feature of financial markets, the debate if ESG scores can also convey information regarding a company's riskiness remains open.

Nonparametric C- and D-vine based quantile regression

no code implementations9 Feb 2021 Marija Tepegjozova, Jing Zhou, Gerda Claeskens, Claudia Czado

Further, we show that the nonparametric conditional quantile estimator is consistent.

Methodology

Vine copula mixture models and clustering for non-Gaussian data

1 code implementation5 Feb 2021 Özge Sahin, Claudia Czado

Since vine copulas are very flexible in capturing these types of dependencies, we propose a novel vine copula mixture model for continuous data.

Clustering Model Selection

Dependence Modeling in Ultra High Dimensions with Vine Copulas and the Graphical Lasso

no code implementations15 Sep 2017 Dominik Müller, Claudia Czado

To model high dimensional data, Gaussian methods are widely used since they remain tractable and yield parsimonious models by imposing strong assumptions on the data.

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