Multiple categorization using fuzzy ART

The internal competition between categories in the fuzzy adaptive resonance theory (ART) neural model can be biased by replacing the original choice function with one that contains a tuning parameter under external control. The competition can be biased, so that, for example, categories of a desired size can be favored. This attentional tuning mechanism allows recalling for a same input different categories under different circumstances, even when no additional learning tabes place. A new tuning parameter is unnecessary, since the readily available vigilance parameter can control both attentional tuning and vigilance. The modified fuzzy ART has the self-stabilization property for analog inputs, whether vigilance is fixed or variable