Search Results for author: Brahim Chaib-Draa

Found 21 papers, 4 papers with code

Global Proxy-based Hard Mining for Visual Place Recognition

1 code implementation28 Feb 2023 Amar Ali-bey, Brahim Chaib-Draa, Philippe Giguère

These proxy representations are thus used to construct a global index that encompasses the similarities between all places in the dataset, allowing for highly informative mini-batch sampling at each training iteration.

Image Retrieval Image Similarity Search +2

GSV-Cities: Toward Appropriate Supervised Visual Place Recognition

1 code implementation19 Oct 2022 Amar Ali-bey, Brahim Chaib-Draa, Philippe Giguère

This paper aims to investigate representation learning for large scale visual place recognition, which consists of determining the location depicted in a query image by referring to a database of reference images.

Image Retrieval Metric Learning +2

Multi-task Learning by Leveraging the Semantic Information

no code implementations3 Mar 2021 Fan Zhou, Brahim Chaib-Draa, Boyu Wang

To confirm the effectiveness of the proposed method, we first compare the algorithm with several baselines on some benchmarks and then test the algorithms under label space shift conditions.

Multi-Task Learning

Stability analysis of SGD through the normalized loss function

no code implementations1 Jan 2021 Alexandre Lemire Paquin, Brahim Chaib-Draa, Philippe Giguère

We prove new generalization bounds for stochastic gradient descent for both the convex and non-convex case.

Generalization Bounds

Domain Generalization via Optimal Transport with Metric Similarity Learning

no code implementations21 Jul 2020 Fan Zhou, Zhuqing Jiang, Changjian Shui, Boyu Wang, Brahim Chaib-Draa

Previous domain generalization approaches mainly focused on learning invariant features and stacking the learned features from each source domain to generalize to a new target domain while ignoring the label information, which will lead to indistinguishable features with an ambiguous classification boundary.

Domain Generalization Metric Learning

Discriminative Active Learning for Domain Adaptation

no code implementations24 May 2020 Fan Zhou, Changjian Shui, Bincheng Huang, Boyu Wang, Brahim Chaib-Draa

To this end, we introduce a discriminative active learning approach for domain adaptation to reduce the efforts of data annotation.

Active Learning Domain Adaptation

The Indian Chefs Process

no code implementations29 Jan 2020 Patrick Dallaire, Luca Ambrogioni, Ludovic Trottier, Umut Güçlü, Max Hinne, Philippe Giguère, Brahim Chaib-Draa, Marcel van Gerven, Francois Laviolette

This paper introduces the Indian Chefs Process (ICP), a Bayesian nonparametric prior on the joint space of infinite directed acyclic graphs (DAGs) and orders that generalizes Indian Buffet Processes.

Towards Contextual Learning in Few-shot Object Classification

no code implementations13 Dec 2019 Mathieu Pagé Fortin, Brahim Chaib-Draa

Inspired by the concept of contextual learning in educational sciences, we propose to make a step towards adopting this principle in FSL by studying the contribution that context can have in object classification in a low-data regime.

Classification Few-Shot Learning +3

On the implicit minimization of alternative loss functions when training deep networks

no code implementations25 Sep 2019 Alexandre Lemire Paquin, Brahim Chaib-Draa, Philippe Giguère

One approach to try to exploit such understanding would be to then make the bias explicit in the loss function.

Inductive Bias

GQ-STN: Optimizing One-Shot Grasp Detection based on Robustness Classifier

no code implementations6 Mar 2019 Alexandre Gariépy, Jean-Christophe Ruel, Brahim Chaib-Draa, Philippe Giguère

To this effect, we present Grasp Quality Spatial Transformer Network (GQ-STN), a one-shot grasp detection network.

Generative Adversarial Positive-Unlabelled Learning

no code implementations21 Nov 2017 Ming Hou, Brahim Chaib-Draa, Chao Li, Qibin Zhao

However, given limited P data, the conventional PU models tend to suffer from overfitting when adapted to very flexible deep neural networks.

Dictionary Learning for Robotic Grasp Recognition and Detection

no code implementations2 Jun 2016 Ludovic Trottier, Philippe Giguère, Brahim Chaib-Draa

The ability to grasp ordinary and potentially never-seen objects is an important feature in both domestic and industrial robotics.

Dictionary Learning

Parametric Exponential Linear Unit for Deep Convolutional Neural Networks

no code implementations30 May 2016 Ludovic Trottier, Philippe Giguère, Brahim Chaib-Draa

Object recognition is an important task for improving the ability of visual systems to perform complex scene understanding.

Object Recognition Scene Understanding

Online Planning Algorithms for POMDPs

no code implementations15 Jan 2014 Stéphane Ross, Joelle Pineau, Sébastien Paquet, Brahim Chaib-Draa

Partially Observable Markov Decision Processes (POMDPs) provide a rich framework for sequential decision-making under uncertainty in stochastic domains.

Decision Making Decision Making Under Uncertainty

A Marginalized Particle Gaussian Process Regression

no code implementations NeurIPS 2012 Yali Wang, Brahim Chaib-Draa

We present a novel marginalized particle Gaussian process (MPGP) regression, which provides a fast, accurate online Bayesian filtering framework to model the latent function.

Computational Efficiency regression

Bootstrapping Apprenticeship Learning

no code implementations NeurIPS 2010 Abdeslam Boularias, Brahim Chaib-Draa

We consider the problem of apprenticeship learning where the examples, demonstrated by an expert, cover only a small part of a large state space.

Car Racing

Theoretical Analysis of Heuristic Search Methods for Online POMDPs

no code implementations NeurIPS 2007 Stephane Ross, Joelle Pineau, Brahim Chaib-Draa

The algorithm uses search heuristics based on an error analysis of lookahead search, to guide the online search towards reachable beliefs with the most potential to reduce error.

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