Jörn-Henrik Jacobsen

Contact: j.jacobsen [at] vectorinstitute.ai

I am a postdoc at Vector Institute and University of Toronto with Rich Zemel, also collaborating with David Duvenaud and Roger Grosse. Previously, I was a postdoc in the lab of Matthias Bethge in Tübingen and a Ph.D. student at the University of Amsterdam under supervision of Arnold Smeulders. My research mainly focuses on gaining better understanding of open challenges in generative modeling, representation learning and robust decision-making. My background is in physics with a specialization in neuroscience.

I have been working on representation learning with generative models, on invertible neural networks and normalizing flows, on generalization under distribution shift as well as on the connection between invariance and adversarial examples.

Publications

F. Tramer, J. Behrmann, N. Carlini, N. Papernot, J.-H. Jacobsen. Fundamental Tradeoffs between Invariance and Sensitivity to Adversarial Perturbations. Under Submission, 2020. [Paper, Code]

D. Krueger, E. Caballero, J.-H. Jacobsen, A. Zhang, J. Binas, R. Le Priol, A. Courville. Out-of-Distribution Generalization via Risk Extrapolation (REx). Under Submission, 2020. [Paper, Code]

C. Finlay, J.-H. Jacobsen, L. Nurbekyan, A. Oberman. How To Train Your Neural ODE. Under Submission, 2020. [Paper]

J. Behrmann^*, P. Vicol^*, K. C. Wang^*, Roger Grosse, J.-H. Jacobsen. On the Non-invertibility of Invertible Neural Networks. Under submission, 2020.

An earlier version appeared in: ML with Guarantees Workshop, NeurIPS 2019. [Paper]

W. Grathwohl, K. C. Wang, J.-H. Jacobsen, D. Duvenaud, R. Zemel. Cutting out the Middle-Man: Training and Evaluating Energy-Based Models without Sampling. Under submission, 2020. [Paper]

W. Grathwohl, K. C. Wang^*, J.-H. Jacobsen^*, David Duvenaud, Mohammad Norouzi, Kevin Swersky. Your Classifier is Secretly an Energy Based Model and You Should Treat it Like One. ICLR, 2020. (ORAL PRESENTATION) [Paper, Code]

E. Fetaya^*, J.-H. Jacobsen^*, W. Grathwohl, R. Zemel. Understanding the Limitations of Conditional Generative Models. ICLR, 2020. [Paper]

R. T. Q. Chen, J. Behrmann, D. Duvenaud, J.-H. Jacobsen. Residual Flows for Invertible Generative Modeling. NeurIPS, 2019. (SPOTLIGHT PRESENTATION) [Paper, Code]

An earlier version appeared in: INNF Workshop, ICML 2019. (CONTRIBUTED TALK) [Link]

Q. Li^*, S. Hague^*, C. Anil, J. Lucas, R. Grosse, J.-H. Jacobsen. Preventing Gradient Attenuation in Lipschitz Constrained Convolutional Networks. NeurIPS, 2019. [Paper, Code]

J. Behrmann^*, W. Grathwohl^*, R. T. Q. Chen, D. Duvenaud, J.-H. Jacobsen^*. Invertible Residual Networks. ICML, 2019. (LONG ORAL PRESENTATION) [Paper, Code]

E. Creager, D. Madras, J.-H. Jacobsen, M. Weis, K. Swersky, T. Pitassi, R. Zemel. Flexibly Fair Representation Learning by Disentanglement. ICML, 2019. [Paper]

J.-H. Jacobsen, J. Behrmann, N. Carlini, F. Tramer, N. Papernot. Exploiting Excessive Invariance caused by Norm-Bounded Adversarial Robustness. SafeML Workshop, ICLR 2019. [Paper, Code]

J.-H. Jacobsen, J. Behrmann, R. Zemel, M. Bethge. Excessive Invariance Causes Adversarial Vulnerability. ICLR, 2019. [Paper]

J.-H. Jacobsen, A.W.M. Smeulders, E. Oyallon. i-RevNet: Deep Invertible Networks. ICLR, 2018. [Paper, Code]

J.-H. Jacobsen, B. de Brabandere, A.W.M. Smeulders. Dynamic Steerable Blocks in Deep Residual Networks. BMVC, 2017. [Paper]

J.-H. Jacobsen, E. Oyallon, S. Mallat, A.W.M. Smeulders. Hierarchical Attribute CNNs. ICML PADL, 2017. [Paper, Code]

J.-H. Jacobsen, B. de Brabandere, A.W.M. Smeulders. Dynamic Steerable Frame Networks. Pre-print, 2017. [Paper]

J.-H. Jacobsen, J. v. Gemert, Z. Lou, A.W.M. Smeulders. Structured Receptive Fields in CNNs. CVPR, 2016. [Paper, Code]

J.-H. Jacobsen, A.W.M. Smeulders. Deep Learning for Neuroimage Classification. OHBM, 2015.

J.-H. Jacobsen, J. Stelzer, T. H. Fritz, G. Chételat, R. L. Joie, R. Turner. Why musical memory can be preserved in advanced Alzheimer's disease. BRAIN, 2015. [Paper] [Scientific commentary by Clark and Warren].

On the news: BBC; Science News; Reddit Frontpage; MedicalXpress; The Verge; El Pais; Noisey; Max-Planck-Society; Spiegel Online

R. Turner, J.-H. Jacobsen. What stays when everything goes. OUPblog, 2015. Oxford University Press Blog.

Invited Talks

Deep Learning Summer School Lecture on Unsupervised Learning with Likelihood-based Generative Models - Edmonton, Canada; July 2019

ICML Workshop Invited Talk on Invertible Neural Nets and Normalizing Flows - Long Beach, USA; June 2019

ICML Workshop Invited Talk on Tractable Probabilistic Models - Long Beach, USA; June 2019

Google Brain, Toronto - Toronto, Canada; April 2019

Courant Institute, NYU - New York, USA; March 2019

IAS / U of Princeton CS - Princeton, USA; March 2019

Vector Institute - Toronto, Canada; June 2018

Amsterdam Data Science Deep Dive - Amsterdam, Netherlands; January 2018

Max-Planck-Institute for Intelligent Systems - Tübingen, Germany; September 2017

University of Toronto - Toronto, Canada; September 2017

Google Brain, Toronto - Toronto, Canada; September 2017

University of Oxford: VGG Seminar - Oxford, United Kingdom; September 2017

Facebook AI Research - New York, USA; August 2017

University of Tübingen - Tübingen, Germany; May 2017

ICML Workshop Invited Talk on Data-efficient ML - New York City, USA; June 2016

Reviewing

Jörn-Henrik Jacobsen
Vector Institute
MaRS Centre, West Tower
661 University Ave., Suite 710
Toronto, ON M5G 1M1