Search Results for author: Louis Wehenkel

Found 8 papers, 1 papers with code

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.

Unit Commitment using Nearest Neighbor as a Short-Term Proxy

no code implementations30 Nov 2016 Gal Dalal, Elad Gilboa, Shie Mannor, Louis Wehenkel

We devise the Unit Commitment Nearest Neighbor (UCNN) algorithm to be used as a proxy for quickly approximating outcomes of short-term decisions, to make tractable hierarchical long-term assessment and planning for large power systems.

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

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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