[rules-dev] [solver] ITC2007 competition results

[Mark Proctor]

Awesome work geoffrey, we'll keep workng to improve drools performance, 
so hopefully next year you'll clean up :)

Don't forget to do a blog on this :)

Mark
Geoffrey De Smet wrote:
> Hi guys,
>
> I finished 4th with my drools-solver implementation of the examination 
> track:
> http://www.cs.qub.ac.uk/itc2007/winner/finalorder.htm
>
> There's much to learn from the other implementations for drools-solver.
> For example, the winner is also using local search (as are most of the 
> others), but he use meta-heuristics to run 3 phases instead of 1, 
> selects his moves a lot smarter and just basically tweaked his 
> configuration a lot better.
>
> Surprisingly, I actually got the best overal result on dataset10: it 
> will be interesting to find out why (could be tweaking luck though).
> I 'll be identifying the features which drools-solver is missing and 
> incorporating them soon.
> Since the end of the competition, the trunk has already gained 10% 
> performance (due to removing shadow facts etc).
>
> I've also done an implementation of the curriculum course track after 
> the competition ended, in less than 16 workings hours.
> The mere development speed, maintainability and runtime performance 
> (after initialization...) of DRL score rules is very very promising.
>