To:Al Smith
cc:d.w.corne@reading.ac.uk, emma@dai.ed.ac.uk,mcs@essex.ac.uk,wbl
Subject:South Wales Scheduling Data
--------
Dear Al,
To confirm our telephone conversation.
1) The line flow capacities given in sw.cost are for the
non-contingency version of the south wales problem and so are 50% of
the real maximum post-fault contingency ratings. The capacities for
non-contingency maintenance planning are 85% of maximum post-fault
rating. I.e. the data should be multiplied by .85 before being
used on the non-contingency problem.
On the contingency version of the should Wales problem the line
capacity data should be multiplied by 2.0 first. In the first part
of the calculation they should then be further multiplied by 0.85
before use.
2) fitness.c rev 1.7 was used to create the schedule of cost 616 given
in Figure C.7 page 263 of "Genetic Programming and Data
Structures". Unfortunately this version in any one week either
provides the isolated_node (or network split) penalty or the line
overload penalty. It does not do both (as given by equation C.1 on
page 247).
3) The schedule given in Figure C.12 page 263 of "Genetic Programming
and Data Structures" has a cost of 12025
I hope this helps.
Bill