[rules-users] Assignment problem

[Patrik Dufresne]

Hi,

I am a Java developer and I am currently working on a work force management
software for food compagnies. So far, I've decided to use constraint
programming (CP) to find a solution to the problem. The current version is
using JaCoP as a solver, but I find it hard to make it support
soft-constraint and it only use Depth First search. So I'm looking around for
a different solver engine and Drools Planner seams to fit my need. I'm
just concern about it's speed since I don't see any way to add global
constraint (like all-different, Count, Among, etc.)

I've look closely to the nurse rostering example. My problem is very
similar. Let say, I have 150 nurses, ~42 different skills, 9 shifts, ~300
events to be assigned. Whats make it easier compare to the example, I only
need to plan one week. My question is simple, does Drools will be able to
handle it ?

To give a better understanding of the problem I'm trying to solve, I've
attach a PDF document with more explanations. (
https://docs.google.com/open?id=0BykkHu_UReIvYzg3NmM2YmUtYjVhNy00NjgwLTliNjctNWJjZTMyNjU0MDM2
)

Thanks to post your opinion.
Any tips are welcome.

-- 
Patrik Dufresne
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