Search Results for author: Carsten Hartmann

Found 7 papers, 1 papers with code

Synchronized states of power grids and oscillator networks by convex optimization

no code implementations14 Mar 2024 Carsten Hartmann, Philipp C. Böttcher, David Gross, Dirk Witthaut

Synchronization is essential for the operation of AC power systems: All generators in the power grid must rotate with fixed relative phases to enable a steady flow of electric power.

Transgressing the boundaries: towards a rigorous understanding of deep learning and its (non-)robustness

no code implementations5 Jul 2023 Carsten Hartmann, Lorenz Richter

Nevertheless, it is evident that certain specifics of DL that could explain its success in applications demands systematic mathematical approaches.

Adversarial Robustness Learning Theory +3

Long Short-Term Memory Neural Network for Temperature Prediction in Laser Powder Bed Additive Manufacturing

no code implementations30 Jan 2023 Ashkan Mansouri Yarahmadi, Michael Breuß, Carsten Hartmann

This is realized by employing heat maps produced by an optimized printing protocol simulation and used for training a specifically tailored recurrent neural network in terms of a long short-term memory architecture.

Traveling Salesman Problem

$α$-Hypergeometric Uncertain Volatility Models and their Connection to 2BSDEs

no code implementations16 Aug 2021 Zaineb Mezdoud, Carsten Hartmann, Mohamed Riad Remita, Omar Kebiri

In this article we propose a $\alpha$-hypergeometric model with uncertain volatility (UV) where we derive a worst-case scenario for option pricing.

Model reduction and uncertainty quantification of multiscale diffusions with parameter uncertainties using nonlinear expectations

no code implementations9 Feb 2021 Hafida Bouanani, Carsten Hartmann, Omar Kebiri

For systems with unknown diffusion coefficient, the underlying stochastic control problem admits an interpretation in terms of a stochastic differential equation driven by a G-Brownian motion.

Optimization and Control Probability 60G65 (Primary), 70K70, 93E20 (Secondary)

Variational approach to rare event simulation using least-squares regression

1 code implementation26 Jan 2019 Carsten Hartmann, Omar Kebiri, Lara Neureither, Lorenz Richter

We propose an adaptive importance sampling scheme for the simulation of rare events when the underlying dynamics is given by a diffusion.

Probability Optimization and Control 65C05 (primary), 65C30, 92C40 (secondary)

Learning Inverse Statics Models Efficiently

no code implementations17 Oct 2017 Rania Rayyes, Daniel Kubus, Carsten Hartmann, Jochen Steil

Moreover, we exploit symmetries in the inverse statics mappings to drastically reduce the number of samples required for learning inverse statics models.

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