The present invention relates to a method for discriminating electrical signals. Corresponding to either gamma radiation or neutron radiation of a radiation event, comprising of a step of receiving plurality of electrical signals. Corresponding to a radiation event; a step of digitizing said plurality of received electrical signals. To provide a plurality of series of discrete digital signals; a step of processing and normalizing the plurality of series of discrete digital signals to provide a plurality of normalized time series sequence of data points; a step of applying symbolic aggregate approximation, sax to the plurality of normalized time series sequence of data points to effect dimensionality reduction to hence provide a plurality of reduced normalized time series sequence of data points; and a step of effecting evolving fuzzy clustering to the plurality of reduced normalized time series sequence of data points obtained from the plurality of received electrical signals. To hence discriminate between electrical signals.