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Add acceptance criteria to both#99

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meatballs merged 2 commits intomasterfrom
add-acceptance-criteria-to-both
Aug 9, 2017
Merged

Add acceptance criteria to both#99
meatballs merged 2 commits intomasterfrom
add-acceptance-criteria-to-both

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@drvinceknight
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For clarity, this is a fork of #98, once that's merged this diff should be clearer.

When using the heuristic to optimise the objective function it was doing
so in ignorance of the constraints.

This add the ability to pass a acceptance_criteria to both heuristics
which gives a bound on some measure. In practice it's used in
schedule.heuristic when an objective function is passed. In this case
it passes the violation counts as an acceptance_criteria to ensure
that as each heuristic goes through the search space optimising the
objective function it will only accept a solution if this does not add
any constraint violations.

The modified tests show a good example of this. The objective function
optimisation was giving a schedule that was in fact invalid. This has
now been fixed.

I was resetting the best energy incorrectly. That should only be reset
if the candidate is better.
@drvinceknight drvinceknight force-pushed the add-acceptance-criteria-to-both branch from abbfaba to b7124f6 Compare August 9, 2017 06:26
When using the heuristic to optimise the objective function it was doing
so in ignorance of the constraints.

This add the ability to pass a `acceptance_criteria` to both heuristics
which gives a bound on some measure. In practice it's used in
`schedule.heuristic` when an objective function is passed. In this case
it passes the violation counts as an `acceptance_criteria` to ensure
that as each heuristic goes through the search space optimising the
objective function it will only accept a solution if this does not add
any constraint violations.

TLDR:

The modified tests show a good example of this. The objective function
optimisation was giving a schedule that was in fact invalid. This has
now been fixed.
@drvinceknight drvinceknight force-pushed the add-acceptance-criteria-to-both branch from b7124f6 to 07bada3 Compare August 9, 2017 06:28
@meatballs meatballs merged commit c6f9b97 into master Aug 9, 2017
@meatballs meatballs deleted the add-acceptance-criteria-to-both branch August 9, 2017 07:11
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2 participants