Search Results for author: Christian Gagne

Found 9 papers, 2 papers with code

Generalizing across Temporal Domains with Koopman Operators

no code implementations12 Feb 2024 Qiuhao Zeng, Wei Wang, Fan Zhou, Gezheng Xu, Ruizhi Pu, Changjian Shui, Christian Gagne, Shichun Yang, Boyu Wang, Charles X. Ling

By employing Koopman Operators, we effectively address the time-evolving distributions encountered in TDG using the principles of Koopman theory, where measurement functions are sought to establish linear transition relations between evolving domains.

Domain Generalization Generalization Bounds

Image-to-Image Translation with Low Resolution Conditioning

1 code implementation23 Jul 2021 Mohamed Abderrahmen Abid, Ihsen Hedhli, Jean-François Lalonde, Christian Gagne

This differs from previous methods that focus on translating a given image style into a target content, our translation approach being able to simultaneously imitate the style and merge the structural information of the LR target.

Image-to-Image Translation Translation

Self-supervised Robust Object Detectors from Partially Labelled Datasets

no code implementations23 May 2020 Mahdieh Abbasi, Denis Laurendeau, Christian Gagne

With the goal of training \emph{one integrated robust object detector with high generalization performance}, we propose a training framework to overcome missing-label challenge of the merged datasets.

Object object-detection +1

Toward Adversarial Robustness by Diversity in an Ensemble of Specialized Deep Neural Networks

no code implementations17 May 2020 Mahdieh Abbasi, Arezoo Rajabi, Christian Gagne, Rakesh B. Bobba

Using MNIST and CIFAR-10, we empirically verify the ability of our ensemble to detect a large portion of well-known black-box adversarial examples, which leads to a significant reduction in the risk rate of adversaries, at the expense of a small increase in the risk rate of clean samples.

Adversarial Robustness

A Novel Unsupervised Post-Processing Calibration Method for DNNS with Robustness to Domain Shift

no code implementations25 Nov 2019 Azadeh Sadat Mozafari, Hugo Siqueira Gomes, Christian Gagne

The uncertainty estimation is critical in real-world decision making applications, especially when distributional shift between the training and test data are prevalent.

Decision Making

Toward Metrics for Differentiating Out-of-Distribution Sets

1 code implementation18 Oct 2019 Mahdieh Abbasi, Changjian Shui, Arezoo Rajabi, Christian Gagne, Rakesh Bobba

We empirically verify that the most protective OOD sets -- selected according to our metrics -- lead to A-CNNs with significantly lower generalization errors than the A-CNNs trained on the least protective ones.

Out of Distribution (OOD) Detection

Unsupervised Temperature Scaling: Robust Post-processing Calibration for Domain Shift

no code implementations25 Sep 2019 Azadeh Sadat Mozafari, Hugo Siqueira Gomes, Christian Gagne

The uncertainty estimation is critical in real-world decision making applications, especially when distributional shift between the training and test data are prevalent.

Decision Making

Controlling Over-generalization and its Effect on Adversarial Examples Generation and Detection

no code implementations21 Aug 2018 Mahdieh Abbasi, Arezoo Rajabi, Azadeh Sadat Mozafari, Rakesh B. Bobba, Christian Gagne

As an appropriate training set for the extra class, we introduce two resources that are computationally efficient to obtain: a representative natural out-distribution set and interpolated in-distribution samples.

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