Search Results for author: Oliver Niggemann

Found 21 papers, 2 papers with code

On the Convergence of Locally Adaptive and Scalable Diffusion-Based Sampling Methods for Deep Bayesian Neural Network Posteriors

1 code implementation13 Mar 2024 Tim Rensmeyer, Oliver Niggemann

Achieving robust uncertainty quantification for deep neural networks represents an important requirement in many real-world applications of deep learning such as medical imaging where it is necessary to assess the reliability of a neural network's prediction.

Uncertainty Quantification

Diagnosis driven Anomaly Detection for CPS

no code implementations27 Nov 2023 Henrik S. Steude, Lukas Moddemann, Alexander Diedrich, Jonas Ehrhardt, Oliver Niggemann

In Cyber-Physical Systems (CPS) research, anomaly detection (detecting abnormal behavior) and diagnosis (identifying the underlying root cause) are often treated as distinct, isolated tasks.

Anomaly Detection

Discret2Di -- Deep Learning based Discretization for Model-based Diagnosis

no code implementations6 Nov 2023 Lukas Moddemann, Henrik Sebastian Steude, Alexander Diedrich, Oliver Niggemann

Consistency-based diagnosis is an established approach to diagnose technical applications, but suffers from significant modeling efforts, especially for dynamic multi-modal time series.

Time Series

Using Autoencoders and AutoDiff to Reconstruct Missing Variables in a Set of Time Series

no code implementations21 Aug 2023 Jan-Philipp Roche, Oliver Niggemann, Jens Friebe

In this paper, a new approach to reconstruct missing variables in a set of time series is presented.

Time Series

Graph Structural Residuals: A Learning Approach to Diagnosis

no code implementations14 Aug 2023 Jan Lukas Augustin, Oliver Niggemann

Traditional model-based diagnosis relies on constructing explicit system models, a process that can be laborious and expertise-demanding.

Graph structure learning

Robustness and Generalization Performance of Deep Learning Models on Cyber-Physical Systems: A Comparative Study

no code implementations13 Jun 2023 Alexander Windmann, Henrik Steude, Oliver Niggemann

Deep learning (DL) models have seen increased attention for time series forecasting, yet the application on cyber-physical systems (CPS) is hindered by the lacking robustness of these methods.

Data Augmentation Time Series +2

A Diagnosis Algorithms for a Rotary Indexing Machine

no code implementations25 May 2023 Maria Krantz, Oliver Niggemann

Finally, we test this algorithm on a model of a rotary indexing machine, demonstrating its effectiveness in identifying faults and their root causes.

A Cross-Frequency Protective Emblem: Protective Options for Medical Units and Wounded Soldiers in the Context of (fully) Autonomous Warfare

no code implementations3 May 2023 Daniel C. Hinck, Jonas J. Schöttler, Maria Krantz, Katharina-Sophie Isleif, Oliver Niggemann

With regard to the technical deployment, possibilities are considered to address different sensors and to send signals out as resiliently as possible.

High Accuracy Uncertainty-Aware Interatomic Force Modeling with Equivariant Bayesian Neural Networks

no code implementations5 Apr 2023 Tim Rensmeyer, Benjamin Craig, Denis Kramer, Oliver Niggemann

Even though Bayesian neural networks offer a promising framework for modeling uncertainty, active learning and incorporating prior physical knowledge, few applications of them can be found in the context of interatomic force modeling.

Active Learning

Plan-Based Derivation of General Functional Structures in Product Design

no code implementations9 Feb 2023 Philipp Rosenthal, Niels Demke, Frank Mantwill, Oliver Niggemann

In product design, a decomposition of the overall product function into a set of smaller, interacting functions is usually considered a crucial first step for any computer-supported design tool.

Problem examination for AI methods in product design

no code implementations19 Jan 2022 Philipp Rosenthal, Oliver Niggemann

Early mappings of these concepts to AI solutions are sketched and verified using design examples.

A Research Agenda for AI Planning in the Field of Flexible Production Systems

no code implementations31 Dec 2021 Aljosha Köcher, Rene Heesch, Niklas Widulle, Anna Nordhausen, Julian Putzke, Alexander Windmann, Oliver Niggemann

Manufacturing companies face challenges when it comes to quickly adapting their production control to fluctuating demands or changing requirements.

Learning Physical Concepts in Cyber-Physical Systems: A Case Study

1 code implementation28 Nov 2021 Henrik S. Steude, Alexander Windmann, Oliver Niggemann

In Cyber-Physical Systems (CPS), ML can for example be used to optimize systems, to detect anomalies or to identify root causes of system failures.

Representation Learning Time Series Analysis +1

Reconfiguring Hybrid Systems Using SAT

no code implementations18 May 2021 Kaja Balzereit, Oliver Niggemann

Instead, AI-based approaches are needed which leverage on a model of the non-faulty system and which search for a set of reconfiguration operations which will establish a valid behavior again.

valid

A Novel Anomaly Detection Algorithm for Hybrid Production Systems based on Deep Learning and Timed Automata

no code implementations29 Oct 2020 Nemanja Hranisavljevic, Oliver Niggemann, Alexander Maier

Performing anomaly detection in hybrid systems is a challenging task since it requires analysis of timing behavior and mutual dependencies of both discrete and continuous signals.

Anomaly Detection

LSTM for Model-Based Anomaly Detection in Cyber-Physical Systems

no code implementations29 Oct 2020 Benedikt Eiteneuer, Oliver Niggemann

Anomaly detection is the task of detecting data which differs from the normal behaviour of a system in a given context.

Anomaly Detection

The DigitalTwin from an Artificial Intelligence Perspective

no code implementations27 Oct 2020 Oliver Niggemann, Alexander Diedrich, Christian Kuehnert, Erik Pfannstiel, Joshua Schraven

Services for Cyber-Physical Systems based on Artificial Intelligence and Machine Learning require a virtual representation of the physical.

BIG-bench Machine Learning

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