Stamping and storing of mappings for fast reusage
C = STAMP_MAP(A,W) or C = A*W
This routine is equivalent to MAP except that it stores previous results (C or U) and retrieves them when the same inputs (A and W or V and W) are given. This is especially good in case of combining classifier studies when the same mappings have to be computed multiple times.
Note that only the highest level of calls to MAP are stored by STAMP_MAP. If multiple calls to lower level calls (e.g. somewhere included in a complicated combined classifier) are expected, they should be called first explicitely.
STAMP_MAP is automatically called inside MAP (and thereby by every overloaded * operation between datasets and mappings) controlled by the following settings