Alexandre Abraham

14 papers 2.6K citations h-index 5 2013–2024

Offline A/B testing for Recommender Systems

Before A/B testing online a new version of a recommender system, it is usual to perform some offline evaluations on historical data. We focus on evaluation methods that compute an estimator of the...

273 citations 2018-01 WSDM

Sample Noise Impact on Active Learning

This work explores the effect of noisy sample selection in active learning strategies. We show on both synthetic problems and real-life use-cases that knowledge of the sample noise can...

6 citations 2021-09 IAL workshop, ECML-PKDD 2021

Towards Clear Expectations for Uncertainty Estimation

If Uncertainty Quantification (UQ) is crucial to achieve trustworthy Machine Learning (ML), most UQ methods suffer from disparate and inconsistent evaluation protocols. We claim this inconsistency...

2 citations 2022-07 arXiv.org

An in silico drug repurposing pipeline to identify drugs with the potential to inhibit SARS-CoV-2 replication

Drug repurposing provides an opportunity to redeploy drugs, which ideally are already approved for use in humans, for the treatment of other diseases. For example, the repurposing of dexamethasone...

Rebuilding Trust in Active Learning with Actionable Metrics

Active Learning (AL) is an active domain of research, but is seldom used in the industry despite the pressing needs. This is in part due to a misalignment of objectives, while research strives at...

Machine Learning for Neuroimaging with Scikit-Learn

Statistical machine learning methods are increasingly used for neuroimaging data analysis. Their main virtue is their ability to model high-dimensional datasets, e.g. multivariate analysis of...

2.3K citations 2014-12 arXiv (Cornell University)

Region segmentation for sparse decompositions: better brain parcellations from rest fMRI

Functional Magnetic Resonance Images acquired during resting-state provide information about the functional organization of the brain through measuring correlations between brain areas....

Improving Bias Correction Standards by Quantifying its Effects on Treatment Outcomes

With the growing access to administrative health databases, retrospective studies have become crucial evidence for medical treatments. Yet, non-randomized studies frequently face selection biases,...

2024-07