Minimum about fuzzy logic
Singleton centroid method – CoGS

Singletons centroid method CoGS (Centre of Gravity for Singletons) is often use for its small computation needs. As a result is horizontal axis of singletons centroid. Singletons are limited in verity values which correspond to output terms (each „tangible stakes“ are shorten) and horizontal component centroid axis is computed. For this axis is applied simple relation which has them analogy in mechanics in the balance on two-armed work computation:

Where xtez is final value – singletons centroid axis in the direction of horizontal axis (along the arm), xi are situations of each singletons and yi are values corresponding to output terms verities („stakes high“).