Package org.processmining.plugins.stochasticpetrinet.simulator

Class PNTimeSeriesSimulator

java.lang.Object

org.processmining.plugins.stochasticpetrinet.simulator.PNSimulator

org.processmining.plugins.stochasticpetrinet.simulator.PNTimeSeriesSimulator

public class PNTimeSeriesSimulator
extends PNSimulator

A stochastic Petri net simulator that replaces each timed transition's distribution with a time series predictor.

Author:

Andreas Rogge-Solti

Field Summary

Fields

Modifier and Type	Field	Description
static int	CACHE_SIZES
protected TimeSeriesConfiguration	config

Fields inherited from class org.processmining.plugins.stochasticpetrinet.simulator.PNSimulator

arrivalDistribution, cachedDurations, CONCEPT_INSTANCE, CONCEPT_NAME, CONCEPT_SIMULATED, lastFiringTime, LIFECYCLE_TRANSITION, LOCATION_ROOM, logProbabilityOfCurrentTrace, oneMarking, random, SIMULATED_LOG_PROBABILITY, TIME_TIMESTAMP, TRANSITION_COMPLETE, transitionRemainingTimes, useOnlyPastTrainingData

Constructor Summary

Constructors

Constructor	Description
PNTimeSeriesSimulator(TimeSeriesConfiguration config)

Method Summary

Modifier and Type	Method	Description
java.util.Map<org.processmining.models.graphbased.directed.petrinet.elements.Transition,java.lang.Double>	getTransitionProbabilities(java.util.Date currentTime, int systemLoad, java.util.Collection<org.processmining.models.graphbased.directed.petrinet.elements.Transition> conflictingTransitions, EfficientStochasticNetSemanticsImpl semantics)
org.processmining.framework.util.Pair<java.lang.Integer,java.lang.Double>	pickTransitionAccordingToWeights(java.util.Collection<org.processmining.models.graphbased.directed.petrinet.elements.Transition> transitions, java.util.Date currentTime, org.processmining.models.semantics.Semantics<org.processmining.models.semantics.petrinet.Marking,org.processmining.models.graphbased.directed.petrinet.elements.Transition> semantics)
protected double	sampleDurationForTransition(double positiveConstraint, long startOfTransition, TimedTransition timedT, StochasticNet.TimeUnit unitFactor, LimitedTreeMap<java.lang.Integer,java.util.Map<org.processmining.models.graphbased.directed.petrinet.elements.Transition,org.apache.commons.math3.distribution.RealDistribution>> cachedDurations, boolean useOnlyPastTrainingData)

Methods inherited from class org.processmining.plugins.stochasticpetrinet.simulator.PNSimulator

addAllDifferentTracesToLog, createSimulatedEvent, createTrace, getEndPlaces, getLogProbabilityOfLastTrace, getNextArrivalDate, getOnlyImmediateTransitions, getReturnObject, getTransitionRemainingTime, getTransitionWithIndex, insertEvent, isFinal, isOneBounded, pickTransition, pickTransitionAccordingToWeights, setUseOnlyPastTrainingData, simulate, simulate, simulate, simulateOneTrace, transitionsContainTimingInfo, updateTransitionMemoriesAfterFiring

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

config

protected TimeSeriesConfiguration config

CACHE_SIZES

public static final int CACHE_SIZES

See Also:

Constant Field Values

Constructor Detail

PNTimeSeriesSimulator

public PNTimeSeriesSimulator(TimeSeriesConfiguration config)

Method Detail

getTransitionProbabilities

public java.util.Map<org.processmining.models.graphbased.directed.petrinet.elements.Transition,java.lang.Double> getTransitionProbabilities(java.util.Date currentTime,
                                                                                                                                                  int systemLoad,
                                                                                                                                                  java.util.Collection<org.processmining.models.graphbased.directed.petrinet.elements.Transition> conflictingTransitions,
                                                                                                                                                  EfficientStochasticNetSemanticsImpl semantics)

Parameters:

currentTime - the time of prediction

systemLoad - the current system load

conflictingTransitions -

semantics -

Returns:

sampleDurationForTransition

protected double sampleDurationForTransition(double positiveConstraint,
                                             long startOfTransition,
                                             TimedTransition timedT,
                                             StochasticNet.TimeUnit unitFactor,
                                             LimitedTreeMap<java.lang.Integer,java.util.Map<org.processmining.models.graphbased.directed.petrinet.elements.Transition,org.apache.commons.math3.distribution.RealDistribution>> cachedDurations,
                                             boolean useOnlyPastTrainingData)

Overrides:

sampleDurationForTransition in class PNSimulator

Parameters:

positiveConstraint - a possible constraint for sampling a value from the distribution of the transition

startOfTransition - long the current time (or better: the last observed event's time)

timedT - TimedTransition that captures information about the duration distribution from which the sample should be taken.

Returns:

pickTransitionAccordingToWeights

public org.processmining.framework.util.Pair<java.lang.Integer,java.lang.Double> pickTransitionAccordingToWeights(java.util.Collection<org.processmining.models.graphbased.directed.petrinet.elements.Transition> transitions,
                                                                                                                        java.util.Date currentTime,
                                                                                                                        org.processmining.models.semantics.Semantics<org.processmining.models.semantics.petrinet.Marking,org.processmining.models.graphbased.directed.petrinet.elements.Transition> semantics)