Learning Rule for Time Delay in Fuzzy Cognitive Maps

In Keun LEE  Soon Hak KWON  

IEICE TRANSACTIONS on Information and Systems   Vol.E93-D   No.11   pp.3153-3157
Publication Date: 2010/11/01
Online ISSN: 1745-1361
DOI: 10.1587/transinf.E93.D.3153
Print ISSN: 0916-8532
Type of Manuscript: LETTER
Category: Biocybernetics, Neurocomputing
Oja's learning rule,  Hebbian learning,  fuzzy cognitive maps,  time delay,  

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Time is considered as an important factor in modeling and operation of dynamic systems. However, few studies have considered time factor in modeling and inference of fuzzy cognitive maps (FCMs), besides, no studies have dealt with time delay in learning of FCMs. Therefore, we propose a learning rule for temporal FCMs involving post- and pre-delay time by extending Oja's learning rule. We show the effectiveness of the proposed rule through simulations which solve a time-delayed chemical plant control problem.