“…Fig 6 shows the architecture of a PNN network. Here a2r1 is itself a column matrix, comprising 28 columns representing the level 2 approximate entropies of the pure signal as well as the ten different types of faults in the "red" phase of each of the 3 lines.Similarly d2r1 is also a column matrix comprising 28 columns representing the level 2 detail entropy values of the pure signal and the ten other types of fault signals in the "red" phase of each of the three lines .Each of the matrices INP1,INP2,INP3,INP4,INP5 and INP6 are of the order 9*28.So the input matrix P is a 9*(28*6)=9*168 matrix.The targets are 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27 …”