Search Results for author: Jean Rouat

Found 21 papers, 6 papers with code

Expanding memory in recurrent spiking networks

no code implementations29 Oct 2023 Ismael Balafrej, Fabien Alibart, Jean Rouat

Recurrent spiking neural networks (RSNNs) are notoriously difficult to train because of the vanishing gradient problem that is enhanced by the binary nature of the spikes.

Stabilizing RNN Gradients through Pre-training

no code implementations23 Aug 2023 Luca Herranz-Celotti, Jean Rouat

However, analysing deep recurrent networks, we identify a new additive source of exponential explosion that emerges from counting gradient paths in a rectangular grid in depth and time.

Excitatory/Inhibitory Balance Emerges as a Key Factor for RBN Performance, Overriding Attractor Dynamics

no code implementations2 Aug 2023 Emmanuel Calvet, Jean Rouat, Bertrand Reulet

Reservoir computing provides a time and cost-efficient alternative to traditional learning methods. Critical regimes, known as the "edge of chaos," have been found to optimize computational performance in binary neural networks.

Memorization

Efficient spike encoding algorithms for neuromorphic speech recognition

no code implementations14 Jul 2022 Sidi Yaya Arnaud Yarga, Jean Rouat, Sean U. N. Wood

Finally, we show that several encoding methods result in improved performance over the conventional deep learning baseline in certain cases, further demonstrating the power of spike encoding algorithms in the encoding of real-valued signals and that neuromorphic implementation has the potential to outperform state of the art techniques.

speech-recognition Speech Recognition

Stabilizing Spiking Neuron Training

no code implementations1 Feb 2022 Luca Herranz-Celotti, Jean Rouat

We show how it can be used to reduce the need of extensive grid-search of dampening, sharpness and tail-fatness of the SG.

Adaptive Approach For Sparse Representations Using The Locally Competitive Algorithm For Audio

1 code implementation29 Sep 2021 Soufiyan Bahadi, Jean Rouat, Éric Plourde

An oriented grid search optimization was applied to adapt the gammachirp's parameters and improve the Matching Pursuit (MP) algorithm's sparsity along with the reconstruction quality.

Signals to Spikes for Neuromorphic Regulated Reservoir Computing and EMG Hand Gesture Recognition

1 code implementation9 Jun 2021 Nikhil Garg, Ismael Balafrej, Yann Beilliard, Dominique Drouin, Fabien Alibart, Jean Rouat

Using a simple machine learning algorithm after spike encoding, we report performance higher than the state-of-the-art spiking neural networks on two open-source datasets for hand gesture recognition.

Benchmarking EMG Gesture Recognition +3

AVECL-UMONS database for audio-visual event classification and localization

no code implementations2 Oct 2020 Mathilde Brousmiche, Stéphane Dupont, Jean Rouat

We introduce the AVECL-UMons dataset for audio-visual event classification and localization in the context of office environments.

General Classification

P-CRITICAL: A Reservoir Autoregulation Plasticity Rule for Neuromorphic Hardware

1 code implementation11 Sep 2020 Ismael Balafrej, Jean Rouat

Backpropagation algorithms on recurrent artificial neural networks require an unfolding of accumulated states over time.

BIG-bench Machine Learning

AriEL: volume coding for sentence generation

no code implementations30 Mar 2020 Luca Celotti, Simon Brodeur, Jean Rouat

This partially supports to the hypothesis that encoding information into volumes instead of into points, can lead to improved retrieval of learned information with random sampling.

Retrieval Sentence

Language coverage and generalization in RNN-based continuous sentence embeddings for interacting agents

no code implementations5 Nov 2019 Luca Celotti, Simon Brodeur, Jean Rouat

While it is known that those embeddings are able to learn some structures of language (e. g. grammar) in a purely data-driven manner, there is very little work on the objective evaluation of their ability to cover the whole language space and to generalize to sentences outside the language bias of the training data.

Dialogue Generation Sentence +1

From Visual to Acoustic Question Answering

no code implementations28 Feb 2019 Jerome Abdelnour, Giampiero Salvi, Jean Rouat

The AQA task consists of analyzing an acoustic scene composed by a combination of elementary sounds and answering questions that relate the position and properties of these sounds.

Acoustic Question Answering Position +2

Classification of auditory stimuli from EEG signals with a regulated recurrent neural network reservoir

no code implementations27 Apr 2018 Marc-Antoine Moinnereau, Thomas Brienne, Simon Brodeur, Jean Rouat, Kevin Whittingstall, Eric Plourde

The use of electroencephalogram (EEG) as the main input signal in brain-machine interfaces has been widely proposed due to the non-invasive nature of the EEG.

BIG-bench Machine Learning EEG +1

HoME: a Household Multimodal Environment

no code implementations29 Nov 2017 Simon Brodeur, Ethan Perez, Ankesh Anand, Florian Golemo, Luca Celotti, Florian Strub, Jean Rouat, Hugo Larochelle, Aaron Courville

We introduce HoME: a Household Multimodal Environment for artificial agents to learn from vision, audio, semantics, physics, and interaction with objects and other agents, all within a realistic context.

OpenAI Gym reinforcement-learning +1

Moving Toward High Precision Dynamical Modelling in Hidden Markov Models

no code implementations1 Jul 2016 Sébastien Gagnon, Jean Rouat

In this paper, we propose that finely-tuned HMM topologies are essential for precise temporal modelling and that this approach should be investigated in state-of-the-art HMM system.

speech-recognition Speech Recognition +1

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