Search Results for author: Ansgar Steland

Found 9 papers, 1 papers with code

Efficiently Computable Safety Bounds for Gaussian Processes in Active Learning

1 code implementation28 Feb 2024 Jörn Tebbe, Christoph Zimmer, Ansgar Steland, Markus Lange-Hegermann, Fabian Mies

Active learning of physical systems must commonly respect practical safety constraints, which restricts the exploration of the design space.

Active Learning Gaussian Processes

On Extreme Value Asymptotics of Projected Sample Covariances in High Dimensions with Applications in Finance and Convolutional Networks

no code implementations12 Oct 2023 Ansgar Steland

Maximum-type statistics of certain functions of the sample covariance matrix of high-dimensional vector time series are studied to statistically confirm or reject the null hypothesis that a data set has been collected under normal conditions.

Portfolio Optimization Time Series

Online Detection of Changes in Moment-Based Projections: When to Retrain Deep Learners or Update Portfolios?

no code implementations14 Feb 2023 Ansgar Steland

Open-end as well as closed-end monitoring is studied under mild assumptions on the training sample and the observations of the monitoring period.

Time Series Time Series Analysis

Cross-Validation and Uncertainty Determination for Randomized Neural Networks with Applications to Mobile Sensors

no code implementations6 Jan 2021 Ansgar Steland, Bart E. Pieters

Results are discussed about supervised learning with such networks and regression methods in terms of consistency and bounds for the generalization and prediction error.

Is there a role for statistics in artificial intelligence?

no code implementations13 Sep 2020 Sarah Friedrich, Gerd Antes, Sigrid Behr, Harald Binder, Werner Brannath, Florian Dumpert, Katja Ickstadt, Hans Kestler, Johannes Lederer, Heinz Leitgöb, Markus Pauly, Ansgar Steland, Adalbert Wilhelm, Tim Friede

The research on and application of artificial intelligence (AI) has triggered a comprehensive scientific, economic, social and political discussion.

Automatic Processing and Solar Cell Detection in Photovoltaic Electroluminescence Images

no code implementations26 Jul 2018 Evgenii Sovetkin, Ansgar Steland

The next important step is the extraction of the solar cells of a PV module, for instance to pass them to a procedure to detect and analyze defects on their surface.

Cell Detection Change Detection

On Convergence of Moments for Approximating Processes and Applications to Surrogate Models

no code implementations28 Apr 2018 Ansgar Steland

This problem especially arises when working with surrogate models, e. g. to enrich observed data by simulated data, where the surrogates $Y_n$'s are constructed to justify that they approximate the $ X_n $'s.

Cannot find the paper you are looking for? You can Submit a new open access paper.