no code implementations • 12 Oct 2022 • Pascale Gourdeau, Varun Kanade, Marta Kwiatkowska, James Worrell
We finish by giving robust learning algorithms for halfspaces on $\{0, 1\}^n$ and then obtaining robustness guarantees for halfspaces in $\mathbb{R}^n$ against precision-bounded adversaries.
no code implementations • 12 May 2022 • Pascale Gourdeau, Varun Kanade, Marta Kwiatkowska, James Worrell
A fundamental problem in adversarial machine learning is to quantify how much training data is needed in the presence of evasion attacks.
no code implementations • NeurIPS 2019 • Pascale Gourdeau, Varun Kanade, Marta Kwiatkowska, James Worrell
However if the adversary is restricted to perturbing $O(\log n)$ bits, then the class of monotone conjunctions can be robustly learned with respect to a general class of distributions (that includes the uniform distribution).
no code implementations • 23 May 2016 • Dmitry Chistikov, Stefan Kiefer, Ines Marušić, Mahsa Shirmohammadi, James Worrell
Nonnegative matrix factorization (NMF) is the problem of decomposing a given nonnegative $n \times m$ matrix $M$ into a product of a nonnegative $n \times d$ matrix $W$ and a nonnegative $d \times m$ matrix $H$.
no code implementations • 22 May 2016 • Dmitry Chistikov, Stefan Kiefer, Ines Marušić, Mahsa Shirmohammadi, James Worrell
Nonnegative matrix factorization (NMF) is the problem of decomposing a given nonnegative $n \times m$ matrix $M$ into a product of a nonnegative $n \times d$ matrix $W$ and a nonnegative $d \times m$ matrix $H$.
no code implementations • 2 May 2014 • Ines Marusic, James Worrell
Habrard and Oncina (2006) give an exact learning algorithm for multiplicity tree automata, in which the number of queries is proportional to the size of the target automaton and the size of a largest counterexample, represented as a tree, that is returned by the Teacher.