Search Results for author: Hamid Jalalzai

Found 7 papers, 1 papers with code

Membership Inference Attacks via Adversarial Examples

no code implementations27 Jul 2022 Hamid Jalalzai, Elie Kadoche, Rémi Leluc, Vincent Plassier

In this paper, we develop a mean to measure the leakage of training data leveraging a quantity appearing as a proxy of the total variation of a trained model near its training samples.

Leveraging Adversarial Examples to Quantify Membership Information Leakage

1 code implementation CVPR 2022 Ganesh Del Grosso, Hamid Jalalzai, Georg Pichler, Catuscia Palamidessi, Pablo Piantanida

The use of personal data for training machine learning systems comes with a privacy threat and measuring the level of privacy of a model is one of the major challenges in machine learning today.

BIG-bench Machine Learning

Concentration bounds for the empirical angular measure with statistical learning applications

no code implementations7 Apr 2021 Stéphan Clémençon, Hamid Jalalzai, Stéphane Lhaut, Anne Sabourin, Johan Segers

The angular measure on the unit sphere characterizes the first-order dependence structure of the components of a random vector in extreme regions and is defined in terms of standardized margins.

Binary Classification Unsupervised Anomaly Detection +1

Feature Clustering for Support Identification in Extreme Regions

no code implementations13 Aug 2020 Hamid Jalalzai, Rémi Leluc

In the framework of multivariate Extreme Value Theory, a common characterization of extremes' dependence structure is the angular measure.

Anomaly Detection Clustering +2

Heavy-tailed Representations, Text Polarity Classification & Data Augmentation

no code implementations NeurIPS 2020 Hamid Jalalzai, Pierre Colombo, Chloé Clavel, Eric Gaussier, Giovanna Varni, Emmanuel Vignon, Anne Sabourin

The dominant approaches to text representation in natural language rely on learning embeddings on massive corpora which have convenient properties such as compositionality and distance preservation.

Attribute Data Augmentation +4

Regularly varying representation for sentence embedding

no code implementations25 Sep 2019 Hamid Jalalzai, Pierre Colombo, Chloé Clavel, Eric Gaussier, Giovanna Varni, Emmanuel Vignon, Anne Sabourin

The dominant approaches to sentence representation in natural language rely on learning embeddings on massive corpuses.

Attribute Sentence +3

On Binary Classification in Extreme Regions

no code implementations NeurIPS 2018 Hamid Jalalzai, Stephan Clémençon, Anne Sabourin

In pattern recognition, a random label Y is to be predicted based upon observing a random vector X valued in $\mathbb{R}^d$ with d>1 by means of a classification rule with minimum probability of error.

Binary Classification Classification +1

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