g (so there is
no termination criterion other than the number of epochs), but the 
sum-of-squares is computed and returned in <CODE>options(8)</CODE>.

<p>The optional parameters have the following interpretations.

<p><CODE>options(1)</CODE> is set to 1 to display error values; also logs learning
rate <CODE>alpha</CODE> and neighbourhood size <CODE>nsize</CODE>.
Otherwise nothing is displayed.

<p><CODE>options(5)</CODE> determines whether the patterns are sampled randomly
with replacement. If it is 0 (the