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Justin Lewis

2 accepted papers

2022

CONSISTENT: Open-Ended Question Generation From News Articles

EMNLP 2022finding

Recent work on question generation has largely focused on factoid questions such as who, what,where, when about basic facts. Generating open-ended why, how, what, etc. questions thatrequire long-form answers have proven more difficult. To facilitate the generation of openended questions, we propose…

2019

Provable Certificates for Adversarial Examples: Fitting a Ball in the Union of Polytopes

NeurIPS 2019poster

We propose a novel method for computing exact pointwise robustness of deep neural networks for all convex lp norms. Our algorithm, GeoCert, finds the largest lp ball centered at an input point x0, within which the output class of a given neural network with ReLU nonlinearities remains unchanged.…