no code implementations • 19 Jul 2023 • Magnus Wiese, Phillip Murray, Ralf Korn
We propose a novel generative model for multivariate discrete-time time series data.
no code implementations • 13 Dec 2021 • Magnus Wiese, Ben Wood, Alexandre Pachoud, Ralf Korn, Hans Buehler, Phillip Murray, Lianjun Bai
We construct realistic spot and equity option market simulators for a single underlying on the basis of normalizing flows.
no code implementations • 3 Dec 2021 • Robert Sicks, Stefanie Grimm, Ralf Korn, Ivo Richert
Estimation of the value-at-risk (VaR) of a large portfolio of assets is an important task for financial institutions.
no code implementations • 8 Nov 2020 • Wieger Hinderks, Ralf Korn, Andreas Wagner
In this paper we introduce a new concept for modelling electricity prices through the introduction of an unobservable intrinsic electricity price $p(\tau)$.
no code implementations • 11 Jun 2020 • Robert Sicks, Ralf Korn, Stefanie Schwaar
Although variational autoencoders (VAE) are successfully used to obtain meaningful low-dimensional representations for high-dimensional data, the characterization of critical points of the loss function for general observation models is not fully understood.
no code implementations • 26 Mar 2020 • Robert Sicks, Ralf Korn, Stefanie Schwaar
We consider a variational autoencoder (VAE) for binary data.
no code implementations • 5 Sep 2019 • Anne-Sophie Krah, Zoran Nikolić, Ralf Korn
Under the Solvency II regime, life insurance companies are asked to derive their solvency capital requirements from the full loss distributions over the coming year.
no code implementations • 15 Jul 2019 • Magnus Wiese, Robert Knobloch, Ralf Korn, Peter Kretschmer
Modeling financial time series by stochastic processes is a challenging task and a central area of research in financial mathematics.
no code implementations • 7 Jul 2019 • Magnus Wiese, Robert Knobloch, Ralf Korn
However, so far exact modeling or extrapolation of distributional properties such as the tail asymptotics generated by a generative network is not available.