no code implementations • 6 Jul 2022 • Sanghamitra Dutta, Jason Long, Saumitra Mishra, Cecilia Tilli, Daniele Magazzeni
In this work, we propose a novel strategy -- that we call RobX -- to generate robust counterfactuals for tree-based ensembles, e. g., XGBoost.
no code implementations • 15 May 2022 • Thomas Spooner, Rui Silva, Joshua Lockhart, Jason Long, Vacslav Glukhov
Solving general Markov decision processes (MDPs) is a computationally hard problem.
no code implementations • 14 Mar 2022 • Marc Rigter, Danial Dervovic, Parisa Hassanzadeh, Jason Long, Parisa Zehtabi, Daniele Magazzeni
To improve the scalability of our approach to a greater number of task classes, we present an approximation based on state abstraction.
no code implementations • 30 Oct 2021 • Saumitra Mishra, Sanghamitra Dutta, Jason Long, Daniele Magazzeni
There exist several methods that aim to address the crucial task of understanding the behaviour of AI/ML models.
2 code implementations • 27 Oct 2021 • Emanuele Albini, Jason Long, Danial Dervovic, Daniele Magazzeni
Feature attributions are a common paradigm for model explanations due to their simplicity in assigning a single numeric score for each input feature to a model.
no code implementations • 29 Jun 2021 • Thomas Spooner, Danial Dervovic, Jason Long, Jon Shepard, Jiahao Chen, Daniele Magazzeni
We present a new method for counterfactual explanations (CFEs) based on Bayesian optimisation that applies to both classification and regression models.
no code implementations • 18 Apr 2019 • W. T. Gowers, Jason Long
We prove that this is indeed the case: there must be a proportional-sized subset of the multiplication table that approximately agrees with part of the multiplication table of a metric group.
Combinatorics