Op 22-01-13 16:37, Michiel Vermandel schreef:

Hi,

I'm trying to find an issue that I expect to be a score trap.
As Geoffrey pointed out I enabled TRACE logging, which produces a rather big file.

Is there documentation on how to interpret the content?

See logging chapter in manual and this image
https://github.com/droolsjbpm/drools-planner/blob/master/drools-planner-docs/src/main/docbook/en-US/images/Chapter-Optimization_algorithms/scopeOverview.png

There are some things that I do not understand:

1) I see sometimes this type of logging:
TRACE main org.drools.planner.core.localsearch.decider.DefaultDecider - Move index (249), score (-484hard/0soft), accepted (true) for move ({T= Inspect B747-AX.I#0 [P1] Kristof IV} <=> {T= Inspect A311-DX.I#1 [P1] Gerald IV}).

What does the <=> mean in this logging? What does the move actually do in this case?

<=> means it's a swap move
=> means it's a change move
Looks like it swaps all variable values of B747-AX and A311-DX

2) TRACE main org.drools.planner.core.localsearch.decider.DefaultDecider - Move index (273), score (-5562hard/0soft), accepted (true) for move ({T= Inspect B747-AX.I#0 [P3] Kristof IV} => (P9) ).

This line indicates that the move is accepted. Is a move accepted before validating the rules or after?

Unrelated: accepted means it's not tabu.
Of all the accepted moves, the move with the highest score wins and becomes the step.

And in the same way does the score (-5562hard/0soft) indicate the score before or after the validation of the rules?

The score is the validation of the rules, after the move has been applied.

Can someone give me some directions, please?

Thanks,

Michiel

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