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- From: Kirt.Undercoffer@f615.n109.z1.fidonet.org (Kirt Undercoffer)
- Sender: Uucp@blkcat.UUCP
- Path: sparky!uunet!blkcat!Uucp
- Newsgroups: comp.lang.lisp
- Subject: Satisfiability program available, common lisp
- Message-ID: <721425616.AA00000@blkcat.UUCP>
- Date: Tue, 10 Nov 1992 12:17:14 -0500
- Lines: 15
-
- DP> I'm very interested in "in practice" kinds of instances. I wonder how
- DP> hard the NP-complete instances that actually arise in areas outside of
- DP> CS theory really are.
-
- DP> If you'd like to trade "hard" instances, let me know.
-
- A real project at the Department of Agriculture gave rise to the Traveling
- Salesman Problem. The project was a dBase or Clipper implementation of a
- varient of TSP - given n people and x locations and z,c,v constraints what is
- the optimum path during their day they need to take to visit a series of points?
- Even with a realtively low number of constraints this problem was practically
- unsolveable as originally formulated (obviously - the program churned for three
- days or so to produce a path for one person - later the problem was
- simplified).
-
-