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A Rule-Embedded Neural-Network and Its Effectiveness in Pattern Recognition with -Posed Conditions

Mina MARUYAMA, Nobuo TSUDA, Kiyoshi NAKABAYASHI

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Summary :

This paper describes an advanced rule-embedded neural network (RENN+) that has an extended framework for achieving a very tight integration of learning-based neural networks and rule-bases of existing if-then rules. The RENN+ is effective in pattern recognition with ill-posed conditions. It is basically composed of several component RENNs and an output RENN, which are three-layer back-propagation (BP) networks except for the input layer. Each RENN can be pre-organized by embedding the if-then rules through translation of the rules into logic functions in a disjunctive normal form, and can be trainded to acquire adaptive rules as required. A weight-modification-reduced learning algorithm (WMR) capable of standard regularization is used for the post-training to suppress excessive modification of the weights for the embedded rules. To estimate the effectiveness of the proposed RENN+, it was used for pattern recognition in a radar system for detection of buried pipes. This trial showed that a RENN+ with two component RENNs had good recognition capability, whereas a conventional BP network was ineffective.

Publication
IEICE TRANSACTIONS on Information Vol.E78-D No.2 pp.152-162
Publication Date
1995/02/25
Publicized
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DOI
Type of Manuscript
PAPER
Category
Bio-Cybernetics and Neurocomputing

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