no code implementations • 29 Apr 2023 • Andrés Hoyos-Idrobo
Many re-ranking strategies in search systems rely on stochastic ranking policies, encoded as Doubly-Stochastic (DS) matrices, that satisfy desired ranking constraints in expectation, e. g., Fairness of Exposure (FOE).
no code implementations • 1 Jan 2021 • Andrés Hoyos-Idrobo
We offer an empirical evaluation of this approach in the fairness of exposure in rankings, where we show that the outcome of our method behaves similarly to greedy algorithms.
1 code implementation • 2 Dec 2020 • Andrés Hoyos-Idrobo
As a result of this formalism, we derive extensions to some existing Euclidean methods of OT-based domain adaptation to their hyperbolic counterparts.
1 code implementation • 19 Jun 2019 • Andrés Hoyos-Idrobo
Optimal transport (OT)-based methods have a wide range of applications and have attracted a tremendous amount of attention in recent years.
1 code implementation • 15 Sep 2016 • Andrés Hoyos-Idrobo, Gaël Varoquaux, Jonas Kahn, Bertrand Thirion
Our goal is to summarize the data to decrease computational costs and memory footprint of subsequent analysis.
1 code implementation • 16 Jun 2016 • Gaël Varoquaux, Pradeep Reddy Raamana, Denis Engemann, Andrés Hoyos-Idrobo, Yannick Schwartz, Bertrand Thirion
Decoding, ie prediction from brain images or signals, calls for empirical evaluation of its predictive power.
no code implementations • 16 Nov 2015 • Bertrand Thirion, Andrés Hoyos-Idrobo, Jonas Kahn, Gael Varoquaux
The use of brain images as markers for diseases or behavioral differences is challenged by the small effects size and the ensuing lack of power, an issue that has incited researchers to rely more systematically on large cohorts.