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Steve Bellart

3 accepted papers

2023

Computing Abductive Explanations for Boosted Regression Trees

IJCAI 2023poster

We present two algorithms for generating (resp. evaluating) abductive explanations for boosted regression trees. Given an instance x and an interval I containing its value F (x) for the boosted regression tree F at hand, the generation algorithm returns a (most general) term t over the Boolean condi…

Cited by 8SourcePDFScholar
2022

On Preferred Abductive Explanations for Decision Trees and Random Forests

IJCAI 2022poster

Abductive explanations take a central place in eXplainable Artificial Intelligence (XAI) by clarifying with few features the way data instances are classified. However, instances may have exponentially many minimum-size abductive explanations, and this source of complexity holds even for ``intell…

Cited by 36SourcePDFScholar
2022

Trading Complexity for Sparsity in Random Forest Explanations

AAAI 2022technical

Random forests have long been considered as powerful model ensembles in machine learning. By training multiple decision trees, whose diversity is fostered through data and feature subsampling, the resulting random forest can lead to more stable and reliable predictions than a single decision tree. T…

Cited by 44SourcePDFScholar