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Peer-timo Bremer

8 accepted papers

2023

Cross-GAN Auditing: Unsupervised Identification of Attribute Level Similarities and Differences Between Pretrained Generative Models

CVPR 2023poster

Generative Adversarial Networks (GANs) are notoriously difficult to train especially for complex distributions and with limited data. This has driven the need for interpretable tools to audit trained networks, for example, to identify biases or ensure fairness. Existing GAN audit tools are restricte…

2022

Models Out of Line: A Fourier Lens on Distribution Shift Robustness

NeurIPS 2022accept

Improving the accuracy of deep neural networks on out-of-distribution (OOD) data is critical to an acceptance of deep learning in real world applications. It has been observed that accuracies on in-distribution (ID) versus OOD data follow a linear trend and models that outperform this baseline are e…

Cited by 0SourcePDFScholar
2022

Single Model Uncertainty Estimation via Stochastic Data Centering

NeurIPS 2022accept

We are interested in estimating the uncertainties of deep neural networks, which play an important role in many scientific and engineering problems. In this paper, we present a striking new finding that an ensemble of neural networks with the same weight initialization, trained on datasets that are…

2022

Sparsity Improves Unsupervised Attribute Discovery in Stylegan

ICASSP 2022accepted

Rich semantics exist in latent spaces inferred using deep generative models. The ability to extract and interpret them is not only essential for understanding the underlying factors of variation in the data distribution, but also crucial for con-trolled image generation. Several methods have been pr…

Cited by 0SourceScholar
2021

Accurate and Robust Feature Importance Estimation under Distribution Shifts

AAAI 2021technical

With increasing reliance on the outcomes of black-box models in critical applications, post-hoc explainability tools that do not require access to the model internals are often used to enable humans understand and trust these models. In particular, we focus on the class of methods that can reveal th…

2019

Understanding Deep Neural Networks through Input Uncertainties

ICASSP 2019accepted

Techniques for understanding the functioning of complex machine learning models are becoming increasingly popular, not only to improve the validation process, but also to extract new insights about the data via exploratory analysis. Though a large class of such tools currently exists, most assume th…

Cited by 0SourceScholar
2016

Theoretical guarantees for poisson disk sampling using pair correlation function

ICASSP 2016accepted

In this paper, we study the problem of generating uniform random point samples on a domain of d dimensional space based on a minimum distance criterion between point samples (Poisson-disk sampling or PDS). First, we formally define PDS via the pair correlation function (PCF) to quantitatively evalua…

Cited by 0SourceScholar
2015

A Randomized Ensemble Approach to Industrial CT Segmentation

ICCV 2015poster

Tuning the models and parameters of common segmentation approaches is challenging especially in the presence of noise and artifacts. Ensemble-based techniques attempt to compensate by randomly varying models and/or parameters to create a diverse set of hypotheses, which are subsequently ranked to ar…

Cited by 11PDFScholar