Search Results for author: Pavlo Mozharovskyi

Found 19 papers, 7 papers with code

Anomaly component analysis

no code implementations26 Dec 2023 Romain Valla, Pavlo Mozharovskyi, Florence d'Alché-Buc

At the crossway of machine learning and data analysis, anomaly detection aims at identifying observations that exhibit abnormal behaviour.

Anomaly Detection

Fast kernel half-space depth for data with non-convex supports

no code implementations21 Dec 2023 Arturo Castellanos, Pavlo Mozharovskyi, Florence d'Alché-Buc, Hicham Janati

Data depth is a statistical function that generalizes order and quantiles to the multivariate setting and beyond, with applications spanning over descriptive and visual statistics, anomaly detection, testing, etc.

Anomaly Detection Descriptive

Towards On-device Learning on the Edge: Ways to Select Neurons to Update under a Budget Constraint

1 code implementation8 Dec 2023 Aël Quélennec, Enzo Tartaglione, Pavlo Mozharovskyi, Van-Tam Nguyen

In the realm of efficient on-device learning under extreme memory and computation constraints, a significant gap in successful approaches persists.

Tailoring Mixup to Data using Kernel Warping functions

1 code implementation2 Nov 2023 Quentin Bouniot, Pavlo Mozharovskyi, Florence d'Alché-Buc

Data augmentation is an essential building block for learning efficient deep learning models.

Data Augmentation

Tackling Interpretability in Audio Classification Networks with Non-negative Matrix Factorization

no code implementations11 May 2023 Jayneel Parekh, Sanjeel Parekh, Pavlo Mozharovskyi, Gaël Richard, Florence d'Alché-Buc

This paper tackles two major problem settings for interpretability of audio processing networks, post-hoc and by-design interpretation.

Audio Classification

Optimized preprocessing and Tiny ML for Attention State Classification

no code implementations20 Mar 2023 Yinghao Wang, Rémi Nahon, Enzo Tartaglione, Pavlo Mozharovskyi, Van-Tam Nguyen

In this paper, we present a new approach to mental state classification from EEG signals by combining signal processing techniques and machine learning (ML) algorithms.

Classification Computational Efficiency +1

Anomaly detection using data depth: multivariate case

no code implementations6 Oct 2022 Pavlo Mozharovskyi

Anomaly detection is a branch of machine learning and data analysis which aims at identifying observations that exhibit abnormal behaviour.

Anomaly Detection

Statistical process monitoring of artificial neural networks

no code implementations15 Sep 2022 Anna Malinovskaya, Pavlo Mozharovskyi, Philipp Otto

The rapid advancement of models based on artificial intelligence demands innovative monitoring techniques which can operate in real time with low computational costs.

valid

Statistical Depth Functions for Ranking Distributions: Definitions, Statistical Learning and Applications

no code implementations20 Jan 2022 Morgane Goibert, Stéphan Clémençon, Ekhine Irurozki, Pavlo Mozharovskyi

The concept of median/consensus has been widely investigated in order to provide a statistical summary of ranking data, i. e. realizations of a random permutation $\Sigma$ of a finite set, $\{1,\; \ldots,\; n\}$ with $n\geq 1$ say.

Novel Concepts

Functional Anomaly Detection: a Benchmark Study

no code implementations13 Jan 2022 Guillaume Staerman, Eric Adjakossa, Pavlo Mozharovskyi, Vera Hofer, Jayant Sen Gupta, Stephan Clémençon

After an overview of the state-of-the-art and a visual-descriptive study, a variety of anomaly detection methods are compared.

Anomaly Detection Descriptive

Affine-Invariant Integrated Rank-Weighted Depth: Definition, Properties and Finite Sample Analysis

no code implementations21 Jun 2021 Guillaume Staerman, Pavlo Mozharovskyi, Stéphan Clémençon

Because it determines a center-outward ordering of observations in $\mathbb{R}^d$ with $d\geq 2$, the concept of statistical depth permits to define quantiles and ranks for multivariate data and use them for various statistical tasks (e. g. inference, hypothesis testing).

Anomaly Detection

A Framework to Learn with Interpretation

1 code implementation NeurIPS 2021 Jayneel Parekh, Pavlo Mozharovskyi, Florence d'Alché-Buc

The interpreter provides both local and global interpretability about the predictive model in terms of human-understandable high level attribute functions, with minimal loss of accuracy.

Attribute Decision Making

When OT meets MoM: Robust estimation of Wasserstein Distance

no code implementations18 Jun 2020 Guillaume Staerman, Pierre Laforgue, Pavlo Mozharovskyi, Florence d'Alché-Buc

Issued from Optimal Transport, the Wasserstein distance has gained importance in Machine Learning due to its appealing geometrical properties and the increasing availability of efficient approximations.

Generative Adversarial Network

Choosing among notions of multivariate depth statistics

no code implementations4 Apr 2020 Karl Mosler, Pavlo Mozharovskyi

In the last few years, efficient exact algorithms as well as approximate ones have been constructed and made available in R-packages.

Methodology Primary 62H05, 62H30, secondary 62-07

The Area of the Convex Hull of Sampled Curves: a Robust Functional Statistical Depth Measure

2 code implementations9 Oct 2019 Guillaume Staerman, Pavlo Mozharovskyi, Stephan Clémençon

a statistical population may play a crucial role in this regard, anomalies corresponding to observations with 'small' depth.

Fraud Detection Management +3

Functional Isolation Forest

1 code implementation9 Apr 2019 Guillaume Staerman, Pavlo Mozharovskyi, Stephan Clémençon, Florence d'Alché-Buc

For the purpose of monitoring the behavior of complex infrastructures (e. g. aircrafts, transport or energy networks), high-rate sensors are deployed to capture multivariate data, generally unlabeled, in quasi continuous-time to detect quickly the occurrence of anomalies that may jeopardize the smooth operation of the system of interest.

Anomaly Detection

Depth and depth-based classification with R-package ddalpha

no code implementations14 Aug 2016 Oleksii Pokotylo, Pavlo Mozharovskyi, Rainer Dyckerhoff

Following the seminal idea of Tukey, data depth is a function that measures how close an arbitrary point of the space is located to an implicitly defined center of a data cloud.

Classification General Classification

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