← Search

Mario Marchand

8 accepted papers

2024

Tackling the XAI Disagreement Problem with Regional Explanations

AISTATS 2024poster

The XAI Disagreement Problem concerns the fact that various explainability methods yield different local/global insights on model behavior. Thus, given the lack of ground truth in explainability, practitioners are left wondering “Which explanation should I believe?”. In this work, we approach the Di…

2023

Algorithm-Dependent Bounds for Representation Learning of Multi-Source Domain Adaptation

AISTATS 2023poster

We use information-theoretic tools to derive a novel analysis of Multi-source Domain Adaptation (MDA) from the representation learning perspective. Concretely, we study joint distribution alignment for supervised MDA with few target labels and unsupervised MDA with pseudo labels, where the latter is…

2023

Fooling SHAP with Stealthily Biased Sampling

ICLR 2023poster

SHAP explanations aim at identifying which features contribute the most to the difference in model prediction at a specific input versus a background distribution. Recent studies have shown that they can be manipulated by malicious adversaries to produce arbitrary desired explanations. However, ex…

Cited by 4SourcePDFScholar
2023

On the Stability-Plasticity Dilemma in Continual Meta-Learning: Theory and Algorithm

NeurIPS 2023poster

We focus on Continual Meta-Learning (CML), which targets accumulating and exploiting meta-knowledge on a sequence of non-i.i.d. tasks. The primary challenge is to strike a balance between stability and plasticity, where a model should be stable to avoid catastrophic forgetting in previous tasks and…

2021

Generalization Bounds For Meta-Learning: An Information-Theoretic Analysis

NeurIPS 2021spotlight

We derive a novel information-theoretic analysis of the generalization property of meta-learning algorithms. Concretely, our analysis proposes a generic understanding in both the conventional learning-to-learn framework \citep{amit2018meta} and the modern model-agnostic meta-learning (MAML) algorith…

2020

Decision trees as partitioning machines to characterize their generalization properties

NeurIPS 2020poster

Decision trees are popular machine learning models that are simple to build and easy to interpret. Even though algorithms to learn decision trees date back to almost 50 years, key properties affecting their generalization error are still weakly bounded. Hence, we revisit binary decision trees on rea…

2016

A Column Generation Bound Minimization Approach with PAC-Bayesian Generalization Guarantees

AISTATS 2016poster

The C-bound, introduced in Lacasse et al (2006), gives a tight upper bound on the risk of the majority vote classifier. Laviolette et al. (2011) designed a learning algorithm named MinCq that outputs a dense distribution on a finite set of base classifiers by minimizing the C-bound, together with a…

Cited by 19SourcePDFScholar
2015

Algorithms for the Hard Pre-Image Problem of String Kernels and the General Problem of String Prediction

ICML 2015poster

We address the pre-image problem encountered in structured output prediction and the one of finding a string maximizing the prediction function of various kernel-based classifiers and regressors. We demonstrate that these problems reduce to a common combinatorial problem valid for many string kernel…