no code implementations • 19 Feb 2024 • Daniel Kowatsch, Nicolas M. Müller, Kilian Tscharke, Philip Sperl, Konstantin Bötinger
For classification, the problem of class imbalance is well known and has been extensively studied.
no code implementations • 9 Feb 2024 • Nicolas M. Müller, Piotr Kawa, Shen Hu, Matthias Neu, Jennifer Williams, Philip Sperl, Konstantin Böttinger
We argue that this binary distinction is oversimplified.
no code implementations • 14 Nov 2023 • Ana Răduţoiu, Jan-Philipp Schulze, Philip Sperl, Konstantin Böttinger
Neural networks build the foundation of several intelligent systems, which, however, are known to be easily fooled by adversarial examples.
no code implementations • 30 Oct 2023 • Nicolas M. Müller, Maximilian Burgert, Pascal Debus, Jennifer Williams, Philip Sperl, Konstantin Böttinger
Machine-learning (ML) shortcuts or spurious correlations are artifacts in datasets that lead to very good training and test performance but severely limit the model's generalization capability.
no code implementations • 22 Aug 2023 • Nicolas M. Müller, Philip Sperl, Konstantin Böttinger
Current anti-spoofing and audio deepfake detection systems use either magnitude spectrogram-based features (such as CQT or Melspectrograms) or raw audio processed through convolution or sinc-layers.
1 code implementation • 8 Feb 2023 • Nicolas M. Müller, Simon Roschmann, Shahbaz Khan, Philip Sperl, Konstantin Böttinger
For real-world applications of machine learning (ML), it is essential that models make predictions based on well-generalizing features rather than spurious correlations in the data.
1 code implementation • 21 Jun 2022 • Jan-Philipp Schulze, Philip Sperl, Ana Răduţoiu, Carla Sagebiel, Konstantin Böttinger
Neural networks follow a gradient-based learning scheme, adapting their mapping parameters by back-propagating the output loss.
Semi-supervised Anomaly Detection Supervised Anomaly Detection
no code implementations • 1 Feb 2022 • Karla Markert, Romain Parracone, Mykhailo Kulakov, Philip Sperl, Ching-Yu Kao, Konstantin Böttinger
Automatic speech recognition (ASR) is improving ever more at mimicking human speech processing.
Automatic Speech Recognition Automatic Speech Recognition (ASR) +1
no code implementations • 17 May 2021 • Franziska Boenisch, Philip Sperl, Konstantin Böttinger
An important problem in deep learning is the privacy and security of neural networks (NNs).
no code implementations • 7 Aug 2020 • Philip Sperl, Konstantin Böttinger
To overcome the downsides of adversarial training while still providing a high level of security, we present a new training approach we call \textit{entropic retraining}.
1 code implementation • 3 Mar 2020 • Philip Sperl, Jan-Philipp Schulze, Konstantin Böttinger
Based on the activation values in the target network, the alarm network decides if the given sample is normal.
Semi-supervised Anomaly Detection Supervised Anomaly Detection
no code implementations • 5 Nov 2019 • Philip Sperl, Ching-Yu Kao, Peng Chen, Konstantin Böttinger
In this paper, we present a novel end-to-end framework to detect such attacks during classification without influencing the target model's performance.