Search Results for author: Pierre Geurts

Found 20 papers, 10 papers with code

Knowledge-Guided Additive Modeling For Supervised Regression

1 code implementation5 Jul 2023 Yann Claes, Vân Anh Huynh-Thu, Pierre Geurts

Learning processes by exploiting restricted domain knowledge is an important task across a plethora of scientific areas, with more and more hybrid methods combining data-driven and model-based approaches.

regression

Distillation from heterogeneous unlabeled collections

no code implementations17 Jan 2022 Jean-Michel Begon, Pierre Geurts

Compressing deep networks is essential to expand their range of applications to constrained settings.

Image Classification

From global to local MDI variable importances for random forests and when they are Shapley values

1 code implementation NeurIPS 2021 Antonio Sutera, Gilles Louppe, Van Anh Huynh-Thu, Louis Wehenkel, Pierre Geurts

Random forests have been widely used for their ability to provide so-called importance measures, which give insight at a global (per dataset) level on the relevance of input variables to predict a certain output.

On The Transferability of Deep-Q Networks

no code implementations6 Oct 2021 Matthia Sabatelli, Pierre Geurts

Transfer Learning (TL) is an efficient machine learning paradigm that allows overcoming some of the hurdles that characterize the successful training of deep neural networks, ranging from long training times to the needs of large datasets.

Transfer Learning

Optimizing model-agnostic Random Subspace ensembles

1 code implementation7 Sep 2021 Vân Anh Huynh-Thu, Pierre Geurts

The degree of randomization in our parametric Random Subspace is thus automatically tuned through the optimization of the feature selection probabilities.

Feature Importance feature selection

Evaluating Local Explanations using White-box Models

no code implementations4 Jun 2021 Amir Hossein Akhavan Rahnama, Judith Butepage, Pierre Geurts, Henrik Bostrom

Evaluating explanation techniques using human subjects is costly, time-consuming and can lead to subjectivity in the assessments.

Feature Importance

On the Transferability of Winning Tickets in Non-Natural Image Datasets

no code implementations11 May 2020 Matthia Sabatelli, Mike Kestemont, Pierre Geurts

We study the generalization properties of pruned neural networks that are the winners of the lottery ticket hypothesis on datasets of natural images.

Multi-task pre-training of deep neural networks for digital pathology

1 code implementation5 May 2020 Romain Mormont, Pierre Geurts, Raphaël Marée

In this work, we investigate multi-task learning as a way of pre-training models for classification tasks in digital pathology.

General Classification Multi-Task Learning +1

Approximating two value functions instead of one: towards characterizing a new family of Deep Reinforcement Learning algorithms

3 code implementations1 Sep 2019 Matthia Sabatelli, Gilles Louppe, Pierre Geurts, Marco A. Wiering

This paper makes one step forward towards characterizing a new family of \textit{model-free} Deep Reinforcement Learning (DRL) algorithms.

Q-Learning

Deep Quality-Value (DQV) Learning

3 code implementations30 Sep 2018 Matthia Sabatelli, Gilles Louppe, Pierre Geurts, Marco A. Wiering

We introduce a novel Deep Reinforcement Learning (DRL) algorithm called Deep Quality-Value (DQV) Learning.

Atari Games Q-Learning +2

Context-dependent feature analysis with random forests

no code implementations12 May 2016 Antonio Sutera, Gilles Louppe, Vân Anh Huynh-Thu, Louis Wehenkel, Pierre Geurts

In many cases, feature selection is often more complicated than identifying a single subset of input variables that would together explain the output.

feature selection

Simple connectome inference from partial correlation statistics in calcium imaging

1 code implementation30 Jun 2014 Antonio Sutera, Arnaud Joly, Vincent François-Lavet, Zixiao Aaron Qiu, Gilles Louppe, Damien Ernst, Pierre Geurts

In this work, we propose a simple yet effective solution to the problem of connectome inference in calcium imaging data.

Classifying pairs with trees for supervised biological network inference

no code implementations24 Apr 2014 Marie Schrynemackers, Louis Wehenkel, M. Madan Babu, Pierre Geurts

Here, we systematically investigate, theoretically and empirically, the exploitation of tree-based ensemble methods in the context of these two approaches for biological network inference.

Clustering

Random forests with random projections of the output space for high dimensional multi-label classification

no code implementations14 Apr 2014 Arnaud Joly, Pierre Geurts, Louis Wehenkel

We adapt the idea of random projections applied to the output space, so as to enhance tree-based ensemble methods in the context of multi-label classification.

General Classification Multi-Label Classification

Understanding variable importances in forests of randomized trees

no code implementations NeurIPS 2013 Gilles Louppe, Louis Wehenkel, Antonio Sutera, Pierre Geurts

Despite growing interest and practical use in various scientific areas, variable importances derived from tree-based ensemble methods are not well understood from a theoretical point of view.

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