Adaptive Resonance Theory Microchips: Circuit Design by Teresa Serrano-Gotarredona, Bernabé Linares-Barranco,

By Teresa Serrano-Gotarredona, Bernabé Linares-Barranco, Andreas G. Andreou

Adaptive Resonance concept Microchips describes circuit recommendations leading to effective and sensible adaptive resonance idea (ART) structures. whereas artwork algorithms were built in software program by means of their creators, this can be the 1st publication that addresses effective VLSI layout of artwork platforms. All structures defined within the e-book were designed and fabricated (or are nearing final touch) as VLSI microchips in anticipation of the upcoming proliferation of paintings purposes to self reliant clever platforms. to house those structures, the ebook not just offers circuit layout concepts, but additionally validates them via experimental measurements. The e-book additionally incorporates a bankruptcy tutorially describing 4 artwork architectures (ART1, ARTMAP, Fuzzy-ART and Fuzzy-ARTMAP) whereas delivering simply comprehensible MATLAB code examples to enforce those 4 algorithms in software program. furthermore, a whole bankruptcy is dedicated to different capability purposes for real-time facts clustering and class learning.

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On the other hand, the larger Pa is made, each Fuzzy-ART module category will have smaller size and smaller predictive error is expected, although a larger number of category nodes (and weights) will result. For Pa = 1 each input pattern a will establish its own Fuzzy-ART category, which will make Fuzzy-ARTMAP to work as a nearest neighbor classifier. 6. As in ARTMAP, Fuzzy-ARTMAP can be trained either Off-Line (as in the examples discussed in this Section), or On-Line. 2 A VLSI-FRIENDLY ARTl ALGORITHM When a specific computational algorithm needs to be implemented in hardware engineers have usually two options.

We have found (in MATLAB) that when Q = 3 X 10- 15 then 25 categories result. However, around this value the resulting number of categories is very sensitive to Q. ADAPTIVE RESONANCE THEORY ALGORITHMS 37 Initialize Fuzzy-ART weights: Initialize Map-Field weights: w. =1 Jk Read Pattern-Category Pair: a=(a,. 18. Flow Diagram of Fuzzy-ARTMAP Algorithm in Slow-Learning Mode strategy based method. For this method several Fuzzy-ARTMAP systems are trained using Fast-Learning, but in such a way that the training sequence ordering is randomly altered for each system.

45) (Uj(old) 1\ b, (vj(old) V b)C) where symbol V denotes the component wise MAX operator. 46) Fig. 12 illustrates how rectangle R j is expanded when category j incorporates a new input vector. As shown in Fig. 12, rectangle R j is expanded by the minimum size needed to incorporate the new input vector b inside the rectangle. In particular, if b is an input vector inside R j no weight change occurs during the weight update. The maximum size that a rectangle R j can reach is limited by the vigilance parameter p.

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