Modeling of Interval Type-2 Fuzzy Logic System by Semi-tensor Product

In this paper, a structural vector modeling method for Interval Type-2 Fuzzy Logic Systems (IT2 FLSs) is proposed. Based on Semi-Tensor Product (STP) theory, the central points of the output variable fuzzy sets are estimated using the least squares method according to the actual input-output data of the system, and these central points are then used to establish structural vector to describe the relationship between input and output variables. Simulation results verify the feasibility of the structural vector modeling method for IT2 FLSs.