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Tuesday 04 November 2014, 16:00-17:00
Computational Neuroscience Journal Club
- 👤 Speaker: Dr. David Barrett (University of Cambridge)
- 📅 Date & Time: Tuesday 04 November 2014, 16:00 - 17:00
- 📍 Venue: Cambridge University Engineering Department, CBL, BE-438 (http://learning.eng.cam.ac.uk/Public/Directions)
Abstract
David Barrett will cover: Stochastic variational learning in recurrent spiking networks, Rezende D and Gerstner W, Frontiers in Computational Neuroscience 2014 (http://journal.frontiersin.org/Journal/10.3389/fncom.2014.00038/abstract).
ABSTRACT : The ability to learn and perform statistical inference with biologically plausible recurrent networks of spiking neurons is an important step toward understanding perception and reasoning. Here we derive and investigate a new learning rule for recurrent spiking networks with hidden neurons, combining principles from variational learning and reinforcement learning. Our network defines a generative model over spike train histories and the derived learning rule has the form of a local Spike Timing Dependent Plasticity rule modulated by global factors (neuromodulators) conveying information about “novelty” on a statistically rigorous ground. Simulations show that our model is able to learn both stationary and non-stationary patterns of spike trains. We also propose one experiment that could potentially be performed with animals in order to test the dynamics of the predicted novelty signal.
Series This talk is part of the Computational Neuroscience series.
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