Custom cooling function #9
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3zcurdia
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Feb 7, 2022
* Metal should know its temperature * Custom cooling function (#9) * Add debug gem for development and testing * Use linear cooling function by default * Add cool down function config option * Do not convert cooling rate to negative number * Add customizable cool_down function * Add cool_down function to README * Clean up metal interface * Update strings at lib/annealing/simulator.rb * Update strings at lib/annealing/simulator.rb:21 * Update strings at lib/annealing/simulator.rb:23 * Update strings at test/annealing/simulator_test.rb:42 * Update strings at test/annealing/simulator_test.rb:49 * Update strings at test/annealing/simulator_test.rb:57 Co-authored-by: Luis Ezcurdia <[email protected]>
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What
Adds a custom cool down function as outline in #1.
Closes #1
Why
Simulator#cool_downprovides a linear temperature reduction algorithm, but simulated annealing is not always linear. There are allowances in the definition for raising, lowering, and holding the temperature until certain conditions are met. It would be useful to provide a way to specify a custom cooling method that takes the currentenergy,temperature, and number ofstepsthe algorithm has performed so far, and returns the new temperature, such that it could operate linearly, geometrically, exponentially, or based on some other custom formula with the current state in mind. It would use the linearSimulator#cool_downas the default.How
cool_downconfiguration option which defaults to a linear reduction functionAnnealing::Simulatorto call either the globalcool_downmethod or one passes in at run time