Rough approximation based neuro fuzzy inference system: a novel approach to approximation and error estimation

The paper presents a new hybridization methodology involving neural, fuzzy and rough computing. A rough sets based approximation technique has been proposed based on a certain neuro-fuzzy architecture. A new rough neuron composition consisting of a combination of a lower bound neuron and a boundary neuron has been presented. The conventional convergence of error in back propagation has been given away for a new framework based on 'output excitation factor' and an inverse input transfer function. The paper also presents a brief comparison of performances based on which it can be observed that the proposed architecture is superior to its counterparts.