UniOviSOM has several functions to implement regression in an easy way. This example shows how to do 1D interpolation in an easy way. In its basic form, grnntra()
trains a generalized regression neural network (GRNN), that can be seen as a normalized rbf (see Specht 1991) that considers normalized rbf's
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grnntra/grnnsim
to estimate a continuous function z=f(x,y) that approximates the points (see figure).
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Finally, note that there are options in grnntra()
to consider least squares estimation of the weights as well as to compute independent terms (see help grnntra()
for details).