Simulator class abstract

Annealing simulator

Implementers

Constructors

Simulator(EnergyField field, {num gammaStart = 0.7, num gammaEnd = 0.2, int outerIterations = 750, int innerIterationsStart = 5, int innerIterationsEnd = 20, int sampleSize = 500})
Simulator constructor.

Properties

acceptanceProbability → num
Acceptance probability of current solution.
no setter
currentEnergy → num
Energy at current field position.
no setter
currentMinEnergy → num
Current energy minimum.
no setter
currentMinPosition → List<num>
Current energy minimizing solution.
no setter
currentPosition → List<num>
Current field position.
no setter
deltaPosition → List<num>
Current perturbation magnitude.
no setter
deltaPositionEnd ↔ List<num>
Returns the perturbation magnitudes at the end of the annealing cycle.
getter/setter pair
deltaPositionStart ↔ List<num>
Returns the initial perturbation magnitudes.
getter/setter pair
field → EnergyField
Energy field.
final
gammaEnd → num
Acceptance probability at temperature tEnd.
final
gammaStart → num
Acceptance probability at temperature tStart.
final
globalMinEnergy → num
Global energy minimum.
no setter
globalMinPosition → List<num>
Global energy minimizing solution.
no setter
hashCode → int
The hash code for this object.
no setterinherited
info → Future<String>
Returns a String containing object info.
no setter
innerIterationsEnd → int
Number of iterations at constant temperature at the end of the annealing process.
final
innerIterationsStart → int
Number of iterations at constant temperature at the start of the annealing process.
final
outerIterations → int
Number of temperature steps defining the annealing schedule.
final
perturbationMagnitudes → Future<List<List<num>>>
Returns the sequence of perturbation magnitudes.
no setter
perturbationSequence ↔ PerturbationSequence
Function used to calculate the sequence of pertubation magnitudes.
getter/setter pair
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
sampleSize → int
Size of the sample used to estimate the initial and final annealing temperature.
final
startPosition ↔ List<num>
Returns the starting position of the annealing process.
getter/setter pair
t → num
Current temperature.
no setter
temperatures → Future<List<num>>
Returns an UnmodifiableListView of the annealing temperatures determining the annealing schedule.
no setter
temperatureSequence ↔ TemperatureSequence
Function used to calculate the temperature sequence.
getter/setter pair
tEnd → Future<num>
Final annealing temperature.
no setter
tStart → Future<num>
Initial annealing temperature.
no setter

Methods

anneal({bool isRecursive = false, num ratio = 0.5, bool isVerbose = false}) → Future<List<num>>
Starts the simulated annealing process and returns the best solution found.
iterationMap({bool isRecursive = false, num ratio = 0.5}) → Future<Map<int, int>>
Returns a map containing the number of inner iterations for each outer iteration step.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
prepareLog() → void
Method called once from within anneal before any simulated annealing iterations.
recordLog() → void
Method called during each (inner) iteration.
toString() → String
A string representation of this object.
override

Operators

operator ==(Object other) → bool
The equality operator.
inherited