The dataset used for initializing the perceptron learning.
RETURNS
The function returns TRUE if an error was detected and FALSE otherwise.
FUNCTION
This function is used to initialize the perceptron structures needed to
train a perceptron. The dataset dset is used to create an array of
training samples stored in the local structure LPAT.
NOTE
)The dataset dset must be IOSET and LEARNSET (see DATASET-flags.
Furthermore this function does NOT initialize a PTRON structure. This
must be done using malloc_ptron.
