That makes a lot of sense. Metaheuristics and local search methods
(which Drools Solver supports) are great for creating schedules, roster,
plannings, ... . I've been using Drools Solver for a bed assignment
problem in health care (more of a benchmark problem) and it performs
well. Colleagues of mine are solving exam-timetables and
course-timetables with metaheuristics, so these type of problems should
be equally doable with Drools Solver.
Drools Solver does not have any time "operators" like Nicolas says, that
is something that your model should implement.
Sincerely,
Wim Vancroonenburg
Greg Barton wrote:
Well, Fusion is mainly geared towards processing incoming dynamic events.
Drools-solver would be best for creating the appointment schedule. However, if you want to react to real time changes that may affect your schedule, you could always use drools-fusion for that. (i.e. we have an appointment for Bob, Alice, and Chuck in Room D on Monday. Then an event comes in saying Chuck is sick within 30 minues of the appointment. If Chuck is a critical member of the meeting the system decides to reschedule, but without the "only on Mondays" constraint.)
So drools-solver would create the schedule, and drools-fusion would decide in
real time based on the current schedule structure and the incoming events
whether to respaawn a solver session to adjust the schedule. Does that make
sense?
--- On Thu, 5/7/09, Damien Raude-Morvan <[email protected]> wrote:
From: Damien Raude-Morvan <[email protected]>
Subject: Re: [rules-users] Drools : usage as appointment booking engine ?
To: "Rules Users List" <[email protected]>
Date: Thursday, May 7, 2009, 10:50 AM
Hello,
Hi Nicolas,
you should look at drools-solver
here is a link to the
documentation<http://hudson.jboss.org/hudson/job/drools/lastSuccessfulBuild/artifact/trunk/target/docs/drools-solver/html_single/index.html>
Thanks this documentation, I was using oudated
documentation from
http://users.telenet.be/geoffrey/tmp/solver/manual/html_single/
.
I've evaluated drools-solver, for example trying to
evolve
"lessonschedule" sample to include some time
constraints but I failed to
use time "operators" in drools solver.
I found Drools Fusion time constraints (before, inside,
meets) interesting
but for now haven't been able to build something with
it. Drools Fusion
"StockTick" sample seems oriented to STREAM event
and not to managing time
slots and constraints on this time slots.
Anybody having experience with such problems ?
Regards,
2009/5/7 Damien Raude-Morvan
<[email protected]>
Hi,
I'm evaluating use of Drools 5 as an
appointment booking engine.
My input data are :
- some time slots, defined with a start and end
time.
- some appointment constraints (only monday, only
morning, appointment
theorical duration)
I've looked at Drools 5 Fusion without finding
a way to go with this.
Can someone give me some pointer / start URL about
how to solve this
kind
of problems ?
--
Damien Raude-Morvan / www.drazzib.com
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