[rules-users] halting on sub-optimal solution

Hi everyone, Could anyone help me by providing me some advice on how to make the searching more efficient? I wrote a program based on OptaPlanner to solve a scheduling problem, and I knew the expected optimal solution. My program runs well to keep finding better solution, however, when it comes to a solution which is really close to the optimal one, the program just halts there. I mean, it keeps searching, but can't reach the optimal even after 10hrs of running time. I am currently using tabu search and simulate Annealing to control the local search, and I have tried several different combinations of parameters, but there is no improvement found. I will appreciate your help. Regards, Gong -- View this message in context: http://drools.46999.n3.nabble.com/halting-on-sub-optimal-solution-tp40294... Sent from the Drools: User forum mailing list archive at Nabble.com.