Portrait of David Rolnick

David Rolnick

Core Academic Member
Canada CIFAR AI Chair
Assistant Professor, McGill University, School of Computer Science
Adjunct Professor, Université de Montréal, Department of Computer Science and Operations Research
Research Topics
AI and Sustainability
AI for Science
Applied Machine Learning
Biodiversity
Building Energy Management Systems
Climate
Climate Change
Climate Change AI
Climate Modeling
Climate Science
Climate Variable Downscaling
Computer Vision
Conservation Technology
Energy Systems
Forest Monitoring
Machine Learning and Climate Change
Machine Learning for Physical Sciences
Machine Learning in Climate Modeling
Machine Learning Theory
Out-of-Distribution (OOD) Detection
Remote Sensing
Satellite Remote Sensing
Time Series Forecasting
Vegetation

Biography

David Rolnick is an assistant professor at McGill University’s School of Computer Science, a core academic member of Mila – Quebec Artificial Intelligence Institute and holds a Canada CIFAR AI Chair. Rolnick’s work focuses on applications of machine learning to help address climate change. He is the co-founder and chair of Climate Change AI, and scientific co-director of Sustainability in the Digital Age. After completing his PhD in applied mathematics at the Massachusetts Institute of Technology (MIT), he was a NSF Mathematical Sciences Postdoctoral Research Fellow, an NSF Graduate Research Fellow and a Fulbright Scholar. He was named to MIT Technology Review’s “35 Innovators Under 35” in 2021.

Current Students

Collaborating researcher
Collaborating Alumni - McGill University
Collaborating researcher - Cambridge University
Co-supervisor :
Postdoctorate - McGill University
Collaborating researcher - McGill University
Collaborating researcher - N/A
Co-supervisor :
PhD - McGill University
Collaborating researcher - Leipzig University
Master's Research - McGill University
Collaborating researcher
Collaborating researcher
Collaborating researcher
Independent visiting researcher - Politecnico di Milano
Independent visiting researcher
Collaborating researcher - Johannes Kepler University
Collaborating researcher - University of Amsterdam
Master's Research - McGill University
PhD - McGill University
PhD - McGill University
Independent visiting researcher - Université de Montréal
Collaborating researcher - Polytechnique Montréal Montréal
Collaborating researcher - University of East Anglia
Collaborating researcher
Collaborating researcher - Columbia university
Postdoctorate - McGill University
Collaborating researcher - University of Waterloo
Co-supervisor :
Collaborating Alumni - Université de Montréal
Master's Research - McGill University
Collaborating researcher - Columbia university
Master's Research - McGill University
Collaborating researcher - University of Tübingen
Independent visiting researcher - Karlsruhe Institute of Technology
Independent visiting researcher
Collaborating researcher - Karlsruhe Institute of Technology
PhD - McGill University
Collaborating Alumni - Université de Montréal
Principal supervisor :
Collaborating researcher
PhD - McGill University
Collaborating researcher - Technical University of Munich

Publications

Digitizing a sustainable future
Lucia A. Reisch
Lucas Joppa
Peter Howson
Artur Gil
Panayiota Alevizou
Nina Michaelidou
Ruby Appiah-Campbell
Tilman Santarius
Susanne Köhler
Massimo Pizzol
Pia-Johanna Schweizer
Dipti Srinivasan
Lynn H. Kaack
Priya L. Donti
ClimART: A Benchmark Dataset for Emulating Atmospheric Radiative Transfer in Weather and Climate Models
Jason N. S. Cole
Howard Barker
Numerical simulations of Earth's weather and climate require substantial amounts of computation. This has led to a growing interest in repla… (see more)cing subroutines that explicitly compute physical processes with approximate machine learning (ML) methods that are fast at inference time. Within weather and climate models, atmospheric radiative transfer (RT) calculations are especially expensive. This has made them a popular target for neural network-based emulators. However, prior work is hard to compare due to the lack of a comprehensive dataset and standardized best practices for ML benchmarking. To fill this gap, we build a large dataset, ClimART, with more than 10 million samples from present, pre-industrial, and future climate conditions, based on the Canadian Earth System Model. ClimART poses several methodological challenges for the ML community, such as multiple out-of-distribution test sets, underlying domain physics, and a trade-off between accuracy and inference speed. We also present several novel baselines that indicate shortcomings of datasets and network architectures used in prior work.
DC3: A learning method for optimization with hard constraints
Priya L. Donti
J Zico Kolter
Large optimization problems with hard constraints arise in many settings, yet classical solvers are often prohibitively slow, motivating the… (see more) use of deep networks as cheap"approximate solvers."Unfortunately, naive deep learning approaches typically cannot enforce the hard constraints of such problems, leading to infeasible solutions. In this work, we present Deep Constraint Completion and Correction (DC3), an algorithm to address this challenge. Specifically, this method enforces feasibility via a differentiable procedure, which implicitly completes partial solutions to satisfy equality constraints and unrolls gradient-based corrections to satisfy inequality constraints. We demonstrate the effectiveness of DC3 in both synthetic optimization tasks and the real-world setting of AC optimal power flow, where hard constraints encode the physics of the electrical grid. In both cases, DC3 achieves near-optimal objective values while preserving feasibility.
Geo-Spatiotemporal Features and Shape-Based Prior Knowledge for Fine-grained Imbalanced Data Classification
Charles (A.) Kantor
Léonard Boussioux
Emmanuel Jehanno
Emmanuel Jehanno
Alexandra Luccioni
Hugues Talbot
Fine-grained classification aims at distinguishing between items with similar global perception and patterns, but that differ by minute deta… (see more)ils. Our primary challenges come from both small inter-class variations and large intra-class variations. In this article, we propose to combine several innovations to improve fine-grained classification within the use-case of wildlife, which is of practical interest for experts. We utilize geo-spatiotemporal data to enrich the picture information and further improve the performance. We also investigate state-of-the-art methods for handling the imbalanced data issue.
Reverse-engineering deep ReLU networks
Konrad Paul Kording
It has been widely assumed that a neural network cannot be recovered from its outputs, as the network depends on its parameters in a highly … (see more)nonlinear way. Here, we prove that in fact it is often possible to identify the architecture, weights, and biases of an unknown deep ReLU network by observing only its output. Every ReLU network defines a piecewise linear function, where the boundaries between linear regions correspond to inputs for which some neuron in the network switches between inactive and active ReLU states. By dissecting the set of region boundaries into components associated with particular neurons, we show both theoretically and empirically that it is possible to recover the weights of neurons and their arrangement within the network, up to isomorphism.