LoggingSimulator class - simulated_annealing library

Constructors

LoggingSimulator(EnergyField field, {num gammaStart = 0.8, num gammaEnd = 0.1, int outerIterations = 750, int innerIterationsStart = 5, int innerIterationsEnd = 20, int sampleSize = 500}): Constructs an object of type LoggingSimulator.

Properties

acceptanceProbability → num: Acceptance probability of current solution.
no setterinherited
acceptanceProbabilityLog → List<num>: Returns the current acceptance probability log.
no setter
currentEnergy → num: Energy at current field position.
no setterinherited
currentEnergyLog → List<num>: Returns the current energy log.
no setter
currentMinEnergy → num: Current energy minimum.
no setterinherited
currentMinEnergyLog → List<num>: Returns the current min. energy log.
no setter
currentMinPosition → List<num>: Current energy minimizing solution.
no setterinherited
currentPosition → List<num>: Current field position.
no setterinherited
currentPositionLog → List<List<num>>: Returns the current position log.
no setter
deltaPosition → List<num>: Current perturbation magnitude.
no setterinherited
deltaPositionEnd ↔ List<num>: Returns the perturbation magnitudes at the end of the annealing cycle.
getter/setter pairinherited
deltaPositionKeys → UnmodifiableListView<String>: Returns a valid list of keys that can be used to store field.dimensions coordinates.
latefinal
deltaPositionLog → List<List<num>>: Returns the current perturbation magnitude log.
no setter
deltaPositionStart ↔ List<num>: Returns the initial perturbation magnitudes.
getter/setter pairinherited
field → EnergyField: Energy field.
finalinherited
gammaEnd → num: Acceptance probability at temperature tEnd.
finalinherited
gammaStart → num: Acceptance probability at temperature tStart.
finalinherited
globalMinEnergy → num: Global energy minimum.
no setterinherited
globalMinPosition → List<num>: Global energy minimizing solution.
no setterinherited
hashCode → int: The hash code for this object.
no setterinherited
info → Future<String>: Returns a String containing object info.
no setterinherited
innerIterationsEnd → int: Number of iterations at constant temperature at the end of the annealing process.
finalinherited
innerIterationsStart → int: Number of iterations at constant temperature at the start of the annealing process.
finalinherited
logCount → int: Returns the number times recordLog() was called.
no setter
outerIterations → int: Number of temperature steps defining the annealing schedule.
finalinherited
perturbationMagnitudes → Future<List<List<num>>>: Returns the sequence of perturbation magnitudes.
no setterinherited
perturbationSequence ↔ PerturbationSequence: Function used to calculate the sequence of pertubation magnitudes.
getter/setter pairinherited
positionKeys → List<String>: Returns a list of valid keys that can be used to store field.dimensions coordinates. The keys are the names of the Intervals used to define the SearchSpace, see EnergyField.
latefinal
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.
finalinherited
startPosition ↔ List<num>: Returns the starting position of the annealing process.
getter/setter pairinherited
t → num: Current temperature.
no setterinherited
temperatureLog → List<num>: Returns the current temperature log.
no setter
temperatures → Future<List<num>>: Returns an UnmodifiableListView of the annealing temperatures determining the annealing schedule.
no setterinherited
temperatureSequence ↔ TemperatureSequence: Function used to calculate the temperature sequence.
getter/setter pairinherited
tEnd → Future<num>: Final annealing temperature.
no setterinherited
tStart → Future<num>: Initial annealing temperature.
no setterinherited

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.
inherited
export({int precision = 10, String delimiter = ' '}) → String: Exports all records.
exportFirst({int precision = 10, String delimiter = ' '}) → String: Exports the first record.
exportLast({int precision = 10, String delimiter = ' '}) → String: Exports the last record.
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.
inherited
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.
override
recordLog() → void: Method called during each (inner) iteration.
override
toString() → String: A string representation of this object.
inherited

Operators

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