Search Results for author: Alexis Bellot

Found 15 papers, 7 papers with code

Multitask Boosting for Survival Analysis with Competing Risks

no code implementations NeurIPS 2018 Alexis Bellot, Mihaela van der Schaar

The co-occurrence of multiple diseases among the general population is an important problem as those patients have more risk of complications and represent a large share of health care expenditure.

Survival Analysis

Kernel Hypothesis Testing with Set-valued Data

no code implementations9 Jul 2019 Alexis Bellot, Mihaela van der Schaar

We present a general framework for hypothesis testing on distributions of sets of individual examples.

Time Series Time Series Analysis +1

Conditional Independence Testing using Generative Adversarial Networks

1 code implementation NeurIPS 2019 Alexis Bellot, Mihaela van der Schaar

We consider the hypothesis testing problem of detecting conditional dependence, with a focus on high-dimensional feature spaces.

Generative Adversarial Network Two-sample testing

A Bayesian Approach to Modelling Longitudinal Data in Electronic Health Records

no code implementations19 Dec 2019 Alexis Bellot, Mihaela van der Schaar

Analyzing electronic health records (EHR) poses significant challenges because often few samples are available describing a patient's health and, when available, their information content is highly diverse.

Accounting for Unobserved Confounding in Domain Generalization

no code implementations21 Jul 2020 Alexis Bellot, Mihaela van der Schaar

Part of the challenge of learning robust models lies in the influence of unobserved confounders that void many of the invariances and principles of minimum error presently used for this problem.

Domain Generalization

Policy Analysis using Synthetic Controls in Continuous-Time

1 code implementation2 Feb 2021 Alexis Bellot, Mihaela van der Schaar

Counterfactual estimation using synthetic controls is one of the most successful recent methodological developments in causal inference.

Causal Inference counterfactual +2

Generalization bounds and algorithms for estimating conditional average treatment effect of dosage

no code implementations29 May 2022 Alexis Bellot, Anish Dhir, Giulia Prando

We investigate the task of estimating the conditional average causal effect of treatment-dosage pairs from a combination of observational data and assumptions on the causal relationships in the underlying system.

counterfactual Epidemiology +2

Continuous-Time Modeling of Counterfactual Outcomes Using Neural Controlled Differential Equations

2 code implementations16 Jun 2022 Nabeel Seedat, Fergus Imrie, Alexis Bellot, Zhaozhi Qian, Mihaela van der Schaar

To assess solutions to this problem, we propose a controllable simulation environment based on a model of tumor growth for a range of scenarios with irregular sampling reflective of a variety of clinical scenarios.

Causal Inference counterfactual +2

Functional Causal Bayesian Optimization

no code implementations10 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.

Bayesian Optimization Gaussian Processes

Towards Bounding Causal Effects under Markov Equivalence

no code implementations13 Nov 2023 Alexis Bellot

In this more "data-driven" setting, we provide a systematic algorithm to derive bounds on causal effects that can be computed analytically.

Causal Identification

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