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Conference by Richard Murray

Published on May 9, 2012


Richard Murray will present his latest work on June 14th in the SBRI conference room...
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Organic - Reservoir Computing (EU FP7)


(Reservoir Computing RC) is an approach to design, train, and analyse recurrent neural networks (RNNs). More specifically, RC offers methods for designing and training artificial neural networks, and it yields computational and sometimes analytical models for biological neural networks.  In the Organic EU project, we are studying cognitive functions of reservoirs based on the primate cortico-strato-thalam-cortical system.

 



See the Organic Website Here:  http://www.reservoir-computing.org/organic

The fundamental principle of RC, which distinguishes it from other views on recurrent neural networks, can be summarized as follows (see also thisScholarpedia article):

·                        use a large, random RNN as an excitable medium - called a reservoir in this context -, such that when driven by input signals, each unit in the RNN creates its own nonlinear transform of the input;

·                        output signals are read out from the excited RNN by some readout mechanism, typically a simple linear combination of the reservoir signals;

·                        outputs can be trained in a supervised way, typically by linear regression of the teacher output on the tapped reservoir signals.

Reservoir computing, as a recently coined term, subsumes a number of independently found instantiations of this fundamental idea:

·                        Temporal Recurrent Neural Network (Dominey 1995)

·                        Liquid State Machines (Natschläger, Maass and Markram 2002)

·                        Echo State Networks (Jaeger 2001)

·                        Decorrelation-Backpropagation Learning (Steil 2004)

 




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