Cost Estimation for Divide-and-Conquer Programs
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- A significant shortcoming of the approach to cost estimation presented
in the last period is that the size of each argument in the body was
treated as a function of the input sizes of the head, independent of
the sizes of other arguments in the body.
- As a result, relationships between the sizes
of different body arguments were lost.
- This, in turn, can cause a
significant loss in precision, especially in divide-and-conquer
programs in which the size of the ``divide'' predicates are dependent.
- As a pragmatic short-term solution, it may be possible to get a lot of
mileage simply by identifying and treating divide-and-conquer programs
specially.
Thu Jan 18 11:27:49 MET 1996 <herme@fi.upm.es>-<webmaster@clip.dia.fi.upm.es>