Search Results for author: Alexis Bondu

Found 12 papers, 6 papers with code

Biquality Learning: a Framework to Design Algorithms Dealing with Closed-Set Distribution Shifts

1 code implementation29 Aug 2023 Pierre Nodet, Vincent Lemaire, Alexis Bondu, Antoine Cornuéjols

Training machine learning models from data with weak supervision and dataset shifts is still challenging.

biquality-learn: a Python library for Biquality Learning

1 code implementation18 Aug 2023 Pierre Nodet, Vincent Lemaire, Alexis Bondu, Antoine Cornuéjols

That is why Biquality Learning has been proposed as a machine learning framework to design algorithms capable of handling multiple weaknesses of supervision and dataset shifts without assumptions on their nature and level by relying on the availability of a small trusted dataset composed of cleanly labeled and representative samples.

Automatic Feature Engineering for Time Series Classification: Evaluation and Discussion

no code implementations2 Aug 2023 Aurélien Renault, Alexis Bondu, Vincent Lemaire, Dominique Gay

Time Series Classification (TSC) has received much attention in the past two decades and is still a crucial and challenging problem in data science and knowledge engineering.

Descriptive Feature Engineering +2

When to Classify Events in Open Times Series?

1 code implementation1 Apr 2022 Youssef Achenchabe, Alexis Bondu, Antoine Cornuéjols, Vincent Lemaire

In the Early Classification in Open Time Series problem (ECOTS), the task is to predict events, i. e. their class and time interval, at the moment that optimizes the accuracy vs. earliness trade-off.

Classification Decision Making +3

Early and Revocable Time Series Classification

1 code implementation21 Sep 2021 Youssef Achenchabe, Alexis Bondu, Antoine Cornuéjols, Vincent Lemaire

Many approaches have been proposed for early classification of time series in light of itssignificance in a wide range of applications including healthcare, transportation and fi-nance.

Classification Decision Making +4

Contrastive Representations for Label Noise Require Fine-Tuning

no code implementations20 Aug 2021 Pierre Nodet, Vincent Lemaire, Alexis Bondu, Antoine Cornuéjols

In presence of noise the experiments show that fine tuning of Contrastive representation allows the six methods to achieve better results than end-to-end learning and represent a new reference compare to the recent state of art.

Robust classification

Early Classification of Time Series is Meaningful

no code implementations27 Apr 2021 Youssef Achenchabe, Alexis Bondu, Antoine Cornuéjols, Vincent Lemaire

Many approaches have been proposed for early classification of time series in light of its significance in a wide range of applications including healthcare, transportation and finance.

Classification Early Classification +3

Interpretable Feature Construction for Time Series Extrinsic Regression

no code implementations15 Mar 2021 Dominique Gay, Alexis Bondu, Vincent Lemaire, Marc Boullé

Supervised learning of time series data has been extensively studied for the case of a categorical target variable.

Benchmarking regression +2

From Weakly Supervised Learning to Biquality Learning: an Introduction

no code implementations16 Dec 2020 Pierre Nodet, Vincent Lemaire, Alexis Bondu, Antoine Cornuéjols, Adam Ouorou

The field of Weakly Supervised Learning (WSL) has recently seen a surge of popularity, with numerous papers addressing different types of "supervision deficiencies".

Weakly-supervised Learning

Importance Reweighting for Biquality Learning

1 code implementation19 Oct 2020 Pierre Nodet, Vincent Lemaire, Alexis Bondu, Antoine Cornuéjols

The field of Weakly Supervised Learning (WSL) has recently seen a surge of popularity, with numerous papers addressing different types of "supervision deficiencies", namely: poor quality, non adaptability, and insufficient quantity of labels.

Weakly-supervised Learning

Early Classification of Time Series. Cost-based Optimization Criterion and Algorithms

no code implementations20 May 2020 Youssef Achenchabe, Alexis Bondu, Antoine Cornuéjols, Asma Dachraoui

An increasing number of applications require to recognize the class of an incoming time series as quickly as possible without unduly compromising the accuracy of the prediction.

Clustering Early Classification +3

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