Search Results for author: Chris Finlay

Found 16 papers, 12 papers with code

Multi-Resolution Continuous Normalizing Flows

1 code implementation15 Jun 2021 Vikram Voleti, Chris Finlay, Adam Oberman, Christopher Pal

In this work we introduce a Multi-Resolution variant of such models (MRCNF), by characterizing the conditional distribution over the additional information required to generate a fine image that is consistent with the coarse image.

Ranked #6 on Image Generation on ImageNet 64x64 (Bits per dim metric)

Density Estimation Image Generation

Improving Continuous Normalizing Flows using a Multi-Resolution Framework

no code implementations ICML Workshop INNF 2021 Vikram Voleti, Chris Finlay, Adam M Oberman, Christopher Pal

Recent work has shown that Continuous Normalizing Flows (CNFs) can serve as generative models of images with exact likelihood calculation and invertible generation/density estimation.

Density Estimation

Climate & BCG: Effects on COVID-19 Death Growth Rates

1 code implementation10 Jul 2020 Chris Finlay, Bruce A. Bassett

Multiple studies have suggested the spread of COVID-19 is affected by factors such as climate, BCG vaccinations, pollution and blood type.

Deterministic Gaussian Averaged Neural Networks

1 code implementation10 Jun 2020 Ryan Campbell, Chris Finlay, Adam M. Oberman

We present a deterministic method to compute the Gaussian average of neural networks used in regression and classification.

Adversarial Robustness regression

Learning normalizing flows from Entropy-Kantorovich potentials

no code implementations10 Jun 2020 Chris Finlay, Augusto Gerolin, Adam M. Oberman, Aram-Alexandre Pooladian

We approach the problem of learning continuous normalizing flows from a dual perspective motivated by entropy-regularized optimal transport, in which continuous normalizing flows are cast as gradients of scalar potential functions.

Deep Learning improves identification of Radio Frequency Interference

1 code implementation18 May 2020 Alireza Vafaei Sadr, Bruce A. Bassett, Nadeem Oozeer, Yabebal Fantaye, Chris Finlay

Our results strongly suggest that deep learning on simulations, boosted by transfer learning on real data, will likely play a key role in the future of RFI flagging of radio astronomy data.

Instrumentation and Methods for Astrophysics

How to train your neural ODE: the world of Jacobian and kinetic regularization

2 code implementations ICML 2020 Chris Finlay, Jörn-Henrik Jacobsen, Levon Nurbekyan, Adam M. Oberman

Training neural ODEs on large datasets has not been tractable due to the necessity of allowing the adaptive numerical ODE solver to refine its step size to very small values.

Density Estimation Image Generation

Farkas layers: don't shift the data, fix the geometry

1 code implementation4 Oct 2019 Aram-Alexandre Pooladian, Chris Finlay, Adam M. Oberman

Successfully training deep neural networks often requires either batch normalization, appropriate weight initialization, both of which come with their own challenges.

Empirical confidence estimates for classification by deep neural networks

no code implementations25 Sep 2019 Chris Finlay, Adam M. Oberman

It is well-known that the softmax values of the network are not estimates of the probabilities of class labels.

Classification

A principled approach for generating adversarial images under non-smooth dissimilarity metrics

2 code implementations5 Aug 2019 Aram-Alexandre Pooladian, Chris Finlay, Tim Hoheisel, Adam Oberman

This includes, but is not limited to, $\ell_1, \ell_2$, and $\ell_\infty$ perturbations; the $\ell_0$ counting "norm" (i. e. true sparseness); and the total variation seminorm, which is a (non-$\ell_p$) convolutional dissimilarity measuring local pixel changes.

Adversarial Attack

Scaleable input gradient regularization for adversarial robustness

1 code implementation27 May 2019 Chris Finlay, Adam M. Oberman

In this work we revisit gradient regularization for adversarial robustness with some new ingredients.

Adversarial Attack Adversarial Defense +1

The LogBarrier adversarial attack: making effective use of decision boundary information

1 code implementation ICCV 2019 Chris Finlay, Aram-Alexandre Pooladian, Adam M. Oberman

Adversarial attacks formally correspond to an optimization problem: find a minimum norm image perturbation, constrained to cause misclassification.

Adversarial Attack Image Classification

Calibrated Top-1 Uncertainty estimates for classification by score based models

1 code implementation21 Mar 2019 Adam M. Oberman, Chris Finlay, Alexander Iannantuono, Tiago Salvador

While the accuracy of modern deep learning models has significantly improved in recent years, the ability of these models to generate uncertainty estimates has not progressed to the same degree.

General Classification Image Classification

Improved robustness to adversarial examples using Lipschitz regularization of the loss

1 code implementation ICLR 2019 Chris Finlay, Adam Oberman, Bilal Abbasi

We augment adversarial training (AT) with worst case adversarial training (WCAT) which improves adversarial robustness by 11% over the current state-of-the-art result in the $\ell_2$ norm on CIFAR-10.

Adversarial Robustness

Lipschitz regularized Deep Neural Networks generalize and are adversarially robust

no code implementations28 Aug 2018 Chris Finlay, Jeff Calder, Bilal Abbasi, Adam Oberman

In this work we study input gradient regularization of deep neural networks, and demonstrate that such regularization leads to generalization proofs and improved adversarial robustness.

Adversarial Robustness

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