fismat = genfis2(Xin,Xout,radii)
the usage for genfis2 is shown above. One of the input required is radii.
i do not understand the meaning of radii. according to the help file,
"radii is a vector that specifies a cluster center's range of influence in each of the data dimensions, assuming the data falls within a unit hyperbox. For example, if the data dimension is 3 (e.g., Xin has two columns and Xout has one column), radii = [0.5 0.4 0.3] specifies that the ranges of influence in the first, second, and third data dimensions (i.e., the first column of Xin, the second column of Xin, and the column of Xout) are 0.5, 0.4, and 0.3 times the width of the data space, respectively. If radii is a scalar value, then this scalar value is applied to all data dimensions, i.e., each cluster center has a spherical neighborhood of influence with the given radius."
I've read this paragraph over and over again but still dont really understand it. I'm using genfis2 instead of genfis1 because of my large input data. the result i get is less than satisfactory. i'm hoping to tweak the radii value to improve it. right now i'm using radii=0.5, the same value used in the matlab help example