Elan Rosenfeld

Hi! I'm a PhD student in the Machine Learning Department at CMU where I am fortunate to be advised by Pradeep Ravikumar and Andrej Risteski. I graduated from CMU with degrees in Computer Science and Statistics & Machine Learning. Before entering grad school I spent two years as a software engineer at Google NYC where I worked on Search Research and Machine Intelligence.

I'm broadly interested in theoretical foundations of machine learning; in particular, I focus on robustness, representation learning, and out-of-distribution generalization. I work to develop principled analyses of the statistical and algorithmic properties of these tasks and possible approaches to solving them. Representative works are highlighted.

Research/Mentorship Opportunities: I am always happy to discuss new research directions; if you're a student at CMU interested in working on domain adaptation / generalization, robust / invariant representation learning, or robust ML more generally, reach out to me! I am also available to give advice and feedback for those who are applying to undergraduate or graduate programs in computer science. If you are applying for a PhD in CMU SCS, I encourage you to sign up to receive feedback through the Graduate Application Support Program.

You can reach me at [firstname] at cmu.edu

[CV] [Semantic Scholar] [Google Scholar]
Conference Publications:

Analyzing and Improving the Optimization Landscape of
Noise-Contrastive Estimation

ICLR 2022 (To Appear)

Bingbin Liu, Elan Rosenfeld, Pradeep Ravikumar, Andrej Risteski
[arXiv] [blog post]

Deep Attentive Variational Inference
ICLR 2022 (To Appear)

Ifigeneia Apostolopoulou, Ian Char, Elan Rosenfeld, Artur Dubrawski
[OpenReview]

An Online Learning Approach to Interpolation and Extrapolation
in Domain Generalization

AISTATS 2022 (To Appear)

Elan Rosenfeld, Pradeep Ravikumar, Andrej Risteski
[arXiv]

The Risks of Invariant Risk Minimization
ICLR 2021

Elan Rosenfeld, Pradeep Ravikumar, Andrej Risteski
[arXiv] [poster] [CMU AI Seminar Talk] [2 minute spotlight presentation]

Certified Robustness to Label-Flipping Attacks via Randomized Smoothing
ICML 2020

Elan Rosenfeld, Ezra Winston, Pradeep Ravikumar, Zico Kolter
[arXiv] [blog post] [virtual poster/presentation] [slides]

Certified Adversarial Robustness via Randomized Smoothing
ICML 2019

Jeremy Cohen, Elan Rosenfeld, Zico Kolter
[arXiv] [code] [ICML talk] [Zico's Simons talk]

Preprints

Iterative Feature Matching: Toward Provable Domain Generalization
with Logarithmic Environments

Yining Chen, Elan Rosenfeld, Mark Sellke, Tengyu Ma, Andrej Risteski
[arXiv]

Workshops and Manuscripts:

Self-Reflective Variational Autoencoder
ICLR 2021 Workshop: Hardware Aware Efficient Training

Ifigeneia Apostolopoulou, Elan Rosenfeld, Artur Dubrawski
[arXiv] [poster] [short presentation]

Human-Usable Password Schemas: Beyond Information-Theoretic Security
CMU Senior Thesis
Awarded “Exemplary Senior Honors Thesis”

Elan Rosenfeld, Santosh Vempala, Manuel Blum
[arXiv] [poster]