Search Results for author: Kevin Roth

Found 12 papers, 4 papers with code

Precise characterization of the prior predictive distribution of deep ReLU networks

no code implementations NeurIPS 2021 Lorenzo Noci, Gregor Bachmann, Kevin Roth, Sebastian Nowozin, Thomas Hofmann

Recent works on Bayesian neural networks (BNNs) have highlighted the need to better understand the implications of using Gaussian priors in combination with the compositional structure of the network architecture.

Disentangling the Roles of Curation, Data-Augmentation and the Prior in the Cold Posterior Effect

no code implementations NeurIPS 2021 Lorenzo Noci, Kevin Roth, Gregor Bachmann, Sebastian Nowozin, Thomas Hofmann

The dataset curation hypothesis of Aitchison (2020): we show empirically that the CPE does not arise in a real curated data set but can be produced in a controlled experiment with varying curation strength.

Data Augmentation

A Primer on Multi-Neuron Relaxation-based Adversarial Robustness Certification

no code implementations ICML Workshop AML 2021 Kevin Roth

This approach is however inherently limited, as it says little about the robustness of the model against more powerful attacks not included in the evaluation.

Adversarial Robustness

How Good is the Bayes Posterior in Deep Neural Networks Really?

1 code implementation ICML 2020 Florian Wenzel, Kevin Roth, Bastiaan S. Veeling, Jakub Świątkowski, Linh Tran, Stephan Mandt, Jasper Snoek, Tim Salimans, Rodolphe Jenatton, Sebastian Nowozin

In this work we cast doubt on the current understanding of Bayes posteriors in popular deep neural networks: we demonstrate through careful MCMC sampling that the posterior predictive induced by the Bayes posterior yields systematically worse predictions compared to simpler methods including point estimates obtained from SGD.

Bayesian Inference Uncertainty Quantification

Adversarial Training Generalizes Data-dependent Spectral Norm Regularization

no code implementations25 Sep 2019 Kevin Roth, Yannic Kilcher, Thomas Hofmann

We establish a theoretical link between adversarial training and operator norm regularization for deep neural networks.

Adversarial Training is a Form of Data-dependent Operator Norm Regularization

no code implementations NeurIPS 2020 Kevin Roth, Yannic Kilcher, Thomas Hofmann

We establish a theoretical link between adversarial training and operator norm regularization for deep neural networks.

The Odds are Odd: A Statistical Test for Detecting Adversarial Examples

1 code implementation13 Feb 2019 Kevin Roth, Yannic Kilcher, Thomas Hofmann

We investigate conditions under which test statistics exist that can reliably detect examples, which have been adversarially manipulated in a white-box attack.

Adversarially Robust Training through Structured Gradient Regularization

no code implementations22 May 2018 Kevin Roth, Aurelien Lucchi, Sebastian Nowozin, Thomas Hofmann

We propose a novel data-dependent structured gradient regularizer to increase the robustness of neural networks vis-a-vis adversarial perturbations.

Stabilizing Training of Generative Adversarial Networks through Regularization

1 code implementation NeurIPS 2017 Kevin Roth, Aurelien Lucchi, Sebastian Nowozin, Thomas Hofmann

Deep generative models based on Generative Adversarial Networks (GANs) have demonstrated impressive sample quality but in order to work they require a careful choice of architecture, parameter initialization, and selection of hyper-parameters.

Image Generation

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