期刊
NEUROCOMPUTING
卷 107, 期 -, 页码 40-48出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.neucom.2012.07.032
关键词
Liquid State Machines; Separation; Fisher Discriminant Ratio
Liquid State Machines constitute a powerful computational tool for carrying out complex real time computations on continuous input streams. Their performance is based on two properties, approximation and separation. While the former depends on the selection of class functions for the readout maps, the latter needs to be evaluated for a particular liquid architecture. In the current paper we show how the Fisher's Discriminant Ratio can be used to effectively measure the separation of a Liquid State Machine. This measure is then used as a fitness function in an evolutionary framework that searches for suitable liquid properties and architectures in order to optimize the performance of the trained readouts. Evaluation results demonstrate the effectiveness of the proposed approach. (C) 2012 Elsevier B.V. All rights reserved.
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