Prof. Dr.

Wrobel, Stefan

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  • Publication
    Robustness in Fatigue Strength Estimation
    ( 2022-12-02)
    Weichert, Dorina
    ;
    Kister, Alexander
    ;
    Houben, Sebastian
    ;
    Ernis, Gunar
    ;
    Wrobel, Stefan
    Fatigue strength estimation is a costly manual material characterization process in which state-of-the-art approaches follow a standardized experiment and analysis procedure. In this paper, we examine a modular, Machine Learning-based approach for fatigue strength estimation that is likely to reduce the number of experiments and, thus, the overall experimental costs. Despite its high potential, deployment of a new approach in a real-life lab requires more than the theoretical definition and simulation. Therefore, we study the robustness of the approach against misspecification of the prior and discretization of the specified loads. We identify its applicability and its advantageous behavior over the state-of-the-art methods, potentially reducing the number of costly experiments.
  • Publication
    Trustworthy Use of Artificial Intelligence
    ( 2019-07)
    Cremers, Armin B.
    ;
    Englander, Alex
    ;
    Gabriel, Markus
    ;
    Hecker, Dirk
    ;
    Mock, Michael
    ;
    Poretschkin, Maximilian
    ;
    Rosenzweig, Julia
    ;
    Rostalski, Frauke
    ;
    Sicking, Joachim
    ;
    Volmer, Julia
    ;
    Voosholz, Jan
    ;
    Voß, Angelika
    ;
    Wrobel, Stefan
    This publication forms a basis for the interdisciplinary development of a certification system for artificial intelligence. In view of the rapid development of artificial intelligence with disruptive and lasting consequences for the economy, society, and everyday life, it highlights the resulting challenges that can be tackled only through interdisciplinary dialog between IT, law, philosophy, and ethics. As a result of this interdisciplinary exchange, it also defines six AI-specific audit areas for trustworthy use of artificial intelligence. They comprise fairness, transparency, autonomy and control, data protection as well as security and reliability while addressing ethical and legal requirements. The latter are further substantiated with the aim of operationalizability.