no code implementations • 18 Dec 2024 • Eleni Sgouritsa, Virginia Aglietti, Yee Whye Teh, Arnaud Doucet, Arthur Gretton, Silvia Chiappa
The reasoning abilities of Large Language Models (LLMs) are attracting increasing attention.
no code implementations • 25 Jun 2024 • Jessica Schrouff, Alexis Bellot, Amal Rannen-Triki, Alan Malek, Isabela Albuquerque, Arthur Gretton, Alexander D'Amour, Silvia Chiappa
Failures of fairness or robustness in machine learning predictive settings can be due to undesired dependencies between covariates, outcomes and auxiliary factors of variation.
no code implementations • 7 Jun 2024 • Virginia Aglietti, Ira Ktena, Jessica Schrouff, Eleni Sgouritsa, Francisco J. R. Ruiz, Alan Malek, Alexis Bellot, Silvia Chiappa
The sample efficiency of Bayesian optimization algorithms depends on carefully crafted acquisition functions (AFs) guiding the sequential collection of function evaluations.
1 code implementation • 13 Jun 2023 • Alan Malek, Virginia Aglietti, Silvia Chiappa
We explore algorithms to select actions in the causal bandit setting where the learner can choose to intervene on a set of random variables related by a causal graph, and the learner sequentially chooses interventions and observes a sample from the interventional distribution.
no code implementations • 10 Jun 2023 • Limor Gultchin, Virginia Aglietti, Alexis Bellot, Silvia Chiappa
We propose functional causal Bayesian optimization (fCBO), a method for finding interventions that optimize a target variable in a known causal graph.
1 code implementation • 31 May 2023 • Virginia Aglietti, Alan Malek, Ira Ktena, Silvia Chiappa
We propose constrained causal Bayesian optimization (cCBO), an approach for finding interventions in a known causal graph that optimize a target variable under some constraints.
no code implementations • 12 Apr 2023 • Nan Rosemary Ke, Sara-Jane Dunn, Jorg Bornschein, Silvia Chiappa, Melanie Rey, Jean-Baptiste Lespiau, Albin Cassirer, Jane Wang, Theophane Weber, David Barrett, Matthew Botvinick, Anirudh Goyal, Mike Mozer, Danilo Rezende
To accurately identify GRNs, perturbational data is required.
1 code implementation • 28 Jan 2023 • Limor Gultchin, Siyuan Guo, Alan Malek, Silvia Chiappa, Ricardo Silva
We introduce a causal framework for designing optimal policies that satisfy fairness constraints.
no code implementations • 11 Apr 2022 • Nan Rosemary Ke, Silvia Chiappa, Jane Wang, Anirudh Goyal, Jorg Bornschein, Melanie Rey, Theophane Weber, Matthew Botvinic, Michael Mozer, Danilo Jimenez Rezende
The fundamental challenge in causal induction is to infer the underlying graph structure given observational and/or interventional data.
no code implementations • 22 Feb 2022 • Carolyn Ashurst, Ryan Carey, Silvia Chiappa, Tom Everitt
In addition to reproducing discriminatory relationships in the training data, machine learning systems can also introduce or amplify discriminatory effects.
no code implementations • 2 Feb 2022 • Jessica Schrouff, Natalie Harris, Oluwasanmi Koyejo, Ibrahim Alabdulmohsin, Eva Schnider, Krista Opsahl-Ong, Alex Brown, Subhrajit Roy, Diana Mincu, Christina Chen, Awa Dieng, YuAn Liu, Vivek Natarajan, Alan Karthikesalingam, Katherine Heller, Silvia Chiappa, Alexander D'Amour
Diagnosing and mitigating changes in model fairness under distribution shift is an important component of the safe deployment of machine learning in healthcare settings.
no code implementations • NeurIPS 2021 • Alan Malek, Silvia Chiappa
This paper considers the problem of selecting a formula for identifying a causal quantity of interest among a set of available formulas.
no code implementations • 21 Oct 2021 • Edgar A. Duéñez-Guzmán, Kevin R. McKee, Yiran Mao, Ben Coppin, Silvia Chiappa, Alexander Sasha Vezhnevets, Michiel A. Bakker, Yoram Bachrach, Suzanne Sadedin, William Isaac, Karl Tuyls, Joel Z. Leibo
Undesired bias afflicts both human and algorithmic decision making, and may be especially prevalent when information processing trade-offs incentivize the use of heuristics.
no code implementations • 2 Jul 2021 • Jorg Bornschein, Silvia Chiappa, Alan Malek, Rosemary Nan Ke
Learning the structure of Bayesian networks and causal relationships from observations is a common goal in several areas of science and technology.
no code implementations • 6 Jan 2021 • Silvia Chiappa, Aldo Pacchiano
Whilst optimal transport (OT) is increasingly being recognized as a powerful and flexible approach for dealing with fairness issues, current OT fairness methods are confined to the use of discrete OT.
no code implementations • 31 Dec 2020 • Luca Oneto, Silvia Chiappa
Machine learning based systems are reaching society at large and in many aspects of everyday life.
no code implementations • 12 Sep 2019 • Silvia Chiappa
Markov switching models (MSMs) are probabilistic models that employ multiple sets of parameters to describe different dynamic regimes that a time series may exhibit at different periods of time.
1 code implementation • 28 Jul 2019 • Ray Jiang, Aldo Pacchiano, Tom Stepleton, Heinrich Jiang, Silvia Chiappa
We propose an approach to fair classification that enforces independence between the classifier outputs and sensitive information by minimizing Wasserstein-1 distances.
no code implementations • 20 Jul 2019 • Silvia Chiappa, Ulrich Paquet
We present an approach to learn the dynamics of multiple objects from image sequences in an unsupervised way.
no code implementations • 15 Jul 2019 • Silvia Chiappa, William S. Isaac
We show that causal Bayesian networks provide us with a powerful tool to measure unfairness in a dataset and to design fair models in complex unfairness scenarios.
no code implementations • 8 May 2019 • Pedro A. Ortega, Jane. X. Wang, Mark Rowland, Tim Genewein, Zeb Kurth-Nelson, Razvan Pascanu, Nicolas Heess, Joel Veness, Alex Pritzel, Pablo Sprechmann, Siddhant M. Jayakumar, Tom McGrath, Kevin Miller, Mohammad Azar, Ian Osband, Neil Rabinowitz, András György, Silvia Chiappa, Simon Osindero, Yee Whye Teh, Hado van Hasselt, Nando de Freitas, Matthew Botvinick, Shane Legg
In this report we review memory-based meta-learning as a tool for building sample-efficient strategies that learn from past experience to adapt to any task within a target class.
no code implementations • 27 Feb 2019 • Ray Jiang, Silvia Chiappa, Tor Lattimore, András György, Pushmeet Kohli
Machine learning is used extensively in recommender systems deployed in products.
1 code implementation • ICLR 2019 • Ishita Dasgupta, Jane Wang, Silvia Chiappa, Jovana Mitrovic, Pedro Ortega, David Raposo, Edward Hughes, Peter Battaglia, Matthew Botvinick, Zeb Kurth-Nelson
Discovering and exploiting the causal structure in the environment is a crucial challenge for intelligent agents.
no code implementations • 22 Feb 2018 • Silvia Chiappa, Thomas P. S. Gillam
We consider the problem of learning fair decision systems in complex scenarios in which a sensitive attribute might affect the decision along both fair and unfair pathways.
1 code implementation • 7 Apr 2017 • Silvia Chiappa, Sébastien Racaniere, Daan Wierstra, Shakir Mohamed
Models that can simulate how environments change in response to actions can be used by agents to plan and act efficiently.
no code implementations • NeurIPS 2010 • Silvia Chiappa, Jan R. Peters
Many time-series such as human movement data consist of a sequence of basic actions, e. g., forehands and backhands in tennis.
no code implementations • NeurIPS 2008 • Silvia Chiappa, Jens Kober, Jan R. Peters
Motor primitives or motion templates have become an important concept for both modeling human motor control as well as generating robot behaviors using imitation learning.