Assume that, before the moment of arrival of a vector signal xk () , p nodes of membership functions 12 , ,..., p are formed and a vector of synaptic weights wk p () 1 is calculated. Let condition (3) be not fulfilled, which leads to the
formation of the node
p1
and to the assignment of an arbitrary initial value of the synaptic weight wp1. In this case,
the NFS output signal can be represented in the form