Adaptive Resonance Theory 2

Introduction:-The Adaptive Resonance Theory (ART) developed by Carpenter and Grossberg designed for clustering binary vectors, called ART1.They later developed ART2 for clustering continuous or real valued vectors.

The capability of recognizing analog patterns is significant enhancement to the system.

The differences between ART2 and ART1 are :

− The modifications needed to accommodate patterns with continuous valued components.

− The F1 field of ART2 is more complex because continuous-valued input vectors may be arbitrarily close together. The F1 layer is split into several sun layers.

− The F1 field in ART2 includes a combination of normalization and noise suppression, in addition to the comparison of the bottom-up and top down signals needed for the reset mechanism.

− The orienting subsystem also to accommodate real-valued data.

The learning laws of ART2 are simple though the network is complicated.