Search Results for author: Eleni Vasilaki

Found 15 papers, 5 papers with code

Optimising network interactions through device agnostic models

no code implementations14 Jan 2024 Luca Manneschi, Ian T. Vidamour, Kilian D. Stenning, Jack C. Gartside, Charles Swindells, Guru Venkat, David Griffin, Susan Stepney, Will R. Branford, Thomas Hayward, Matt O Ellis, Eleni Vasilaki

Physically implemented neural networks hold the potential to achieve the performance of deep learning models by exploiting the innate physical properties of devices as computational tools.

Machine learning using magnetic stochastic synapses

1 code implementation3 Mar 2023 Matthew O. A. Ellis, Alex Welbourne, Stephan J. Kyle, Paul W. Fry, Dan A. Allwood, Thomas J. Hayward, Eleni Vasilaki

For single measurements, the rule results in binary synapses with minimal stochasticity, sacrificing potential performance for robustness.

A perspective on physical reservoir computing with nanomagnetic devices

no code implementations9 Dec 2022 Dan A Allwood, Matthew O A Ellis, David Griffin, Thomas J Hayward, Luca Manneschi, Mohammad F KH Musameh, Simon O'Keefe, Susan Stepney, Charles Swindells, Martin A Trefzer, Eleni Vasilaki, Guru Venkat, Ian Vidamour, Chester Wringe

Neural networks have revolutionized the area of artificial intelligence and introduced transformative applications to almost every scientific field and industry.

Quantifying the Computational Capability of a Nanomagnetic Reservoir Computing Platform with Emergent Magnetization Dynamics

no code implementations29 Nov 2021 Ian T Vidamour, Matthew O A Ellis, David Griffin, Guru Venkat, Charles Swindells, Richard W S Dawidek, Thomas J Broomhall, Nina-Juliane Steinke, Joshaniel F K Cooper, Francisco Maccherozzi, Sarnjeet S Dhesi, Susan Stepney, Eleni Vasilaki, Dan A Allwood, Thomas J Hayward

Devices based on arrays of interconnected magnetic nano-rings with emergent magnetization dynamics have recently been proposed for use in reservoir computing applications, but for them to be computationally useful it must be possible to optimise their dynamical responses.

EchoVPR: Echo State Networks for Visual Place Recognition

1 code implementation11 Oct 2021 Anil Ozdemir, Mark Scerri, Andrew B. Barron, Andrew Philippides, Michael Mangan, Eleni Vasilaki, Luca Manneschi

We report that the addition of ESNs to pre-processed convolutional neural networks led to a dramatic boost in performance in comparison to non-recurrent networks in five out of six standard benchmarks (GardensPoint, SPEDTest, ESSEX3IN1, Oxford RobotCar, and Nordland), demonstrating that ESNs are able to capture the temporal structure inherent in VPR problems.

Autonomous Navigation Visual Place Recognition

A Robotic Model of Hippocampal Reverse Replay for Reinforcement Learning

no code implementations23 Feb 2021 Matthew T. Whelan, Tony J. Prescott, Eleni Vasilaki

Hippocampal reverse replay is thought to contribute to learning, and particularly reinforcement learning, in animals.

Hippocampus reinforcement-learning +1

Exploiting Multiple Timescales in Hierarchical Echo State Networks

no code implementations11 Jan 2021 Luca Manneschi, Matthew O. A. Ellis, Guido Gigante, Andrew C. Lin, Paolo del Giudice, Eleni Vasilaki

Echo state networks (ESNs) are a powerful form of reservoir computing that only require training of linear output weights whilst the internal reservoir is formed of fixed randomly connected neurons.

A semi-supervised sparse K-Means algorithm

1 code implementation16 Mar 2020 Avgoustinos Vouros, Eleni Vasilaki

We consider the problem of data clustering with unidentified feature quality and when a small amount of labelled data is provided.

Clustering

SpaRCe: Improved Learning of Reservoir Computing Systems through Sparse Representations

no code implementations4 Dec 2019 Luca Manneschi, Andrew C. Lin, Eleni Vasilaki

The read-out weights and the thresholds are learned by an on-line gradient rule that minimises an error function on the outputs of the network.

BIG-bench Machine Learning Decision Making

Learning sparsity in reservoir computing through a novel bio-inspired algorithm

no code implementations19 Jul 2019 Luca Manneschi, Andrew C. Lin, Eleni Vasilaki

In this work we took inspiration from the fruit fly brain to formulate a novel machine learning algorithm that is able to optimize the sparsity level of a reservoir by changing the firing thresholds of the nodes.

General Classification Memorization

Is Epicurus the father of Reinforcement Learning?

no code implementations12 Oct 2017 Eleni Vasilaki

The Epicurean Philosophy is commonly thought as simplistic and hedonistic.

Philosophy reinforcement-learning +1

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