no code implementations • 26 Feb 2024 • Christoph Weilenmann, Alexandros Ziogas, Till Zellweger, Kevin Portner, Marko Mladenović, Manasa Kaniselvan, Timoleon Moraitis, Mathieu Luisier, Alexandros Emboras
Based on this finding, we infer that memristive devices with a better emulation of the synaptic functionalities do not only broaden the applicability of neuromorphic computing, but could also improve the performance and energy costs of certain artificial intelligence applications.
1 code implementation • 17 Oct 2022 • Franz Scherr, Qinghai Guo, Timoleon Moraitis
Specifically, the brain also transforms the environment through efference, i. e. motor commands, however it sends to itself an EC of the full commands, i. e. more than a mere SSL sign.
1 code implementation • 23 Sep 2022 • Adrien Journé, Hector Garcia Rodriguez, Qinghai Guo, Timoleon Moraitis
Recent approximations to backpropagation (BP) have mitigated many of BP's computational inefficiencies and incompatibilities with biology, but important limitations still remain.
1 code implementation • 28 Jun 2022 • Hector Garcia Rodriguez, Qinghai Guo, Timoleon Moraitis
Its key mechanism is that synapses have a state, propagated through time by a self-recurrent connection-within-the-synapse.
1 code implementation • ICLR 2022 • Alan Jeffares, Qinghai Guo, Pontus Stenetorp, Timoleon Moraitis
We demonstrate these in two toy problems of sequence classification, and in a temporally-encoded MNIST dataset where our RC model achieves 99. 19% accuracy after the first input time-step, outperforming the state of the art in temporal coding with SNNs, as well as in spoken-word classification of Google Speech Commands, outperforming non-RC-trained early inference with LSTMs.
1 code implementation • 12 Jul 2021 • Timoleon Moraitis, Dmitry Toichkin, Adrien Journé, Yansong Chua, Qinghai Guo
All in all, Hebbian efficiency, theoretical underpinning, cross-entropy-minimization, and surprising empirical advantages, suggest that SoftHebb may inspire highly neuromorphic and radically different, but practical and advantageous learning algorithms and hardware accelerators.
no code implementations • 15 Sep 2020 • Timoleon Moraitis, Abu Sebastian, Evangelos Eleftheriou
Biological neurons and their in-silico emulations for neuromorphic artificial intelligence (AI) use extraordinarily energy-efficient mechanisms, such as spike-based communication and local synaptic plasticity.
no code implementations • 8 Apr 2020 • Ana Stanojevic, Giovanni Cherubini, Timoleon Moraitis, Abu Sebastian
In this paper, we propose a system for file classification in large data sets based on spiking neural networks (SNNs).
no code implementations • 17 Jun 2017 • Timoleon Moraitis, Abu Sebastian, Irem Boybat, Manuel Le Gallo, Tomas Tuma, Evangelos Eleftheriou
However, some spike-timing-related strengths of SNNs are hindered by the sensitivity of spike-timing-dependent plasticity (STDP) rules to input spike rates, as fine temporal correlations may be obstructed by coarser correlations between firing rates.