Package org.goplanit.assignment.ltm.sltm

Class StaticLtmOriginBushDestLabelledStrategy

java.lang.Object

org.goplanit.assignment.ltm.sltm.StaticLtmAssignmentStrategy

org.goplanit.assignment.ltm.sltm.StaticLtmBushStrategyBase<RootedLabelledBush>

org.goplanit.assignment.ltm.sltm.StaticLtmBushStrategyRootLabelled

org.goplanit.assignment.ltm.sltm.StaticLtmOriginBushDestLabelledStrategy

public class StaticLtmOriginBushDestLabelledStrategy
extends StaticLtmBushStrategyRootLabelled

Implementation to support an orgin-based bush (destination labelled) solution for sLTM. Memory and computationally inferior to destination based implementation.

Author:

markr

Field Summary

Fields inherited from class org.goplanit.assignment.ltm.sltm.StaticLtmBushStrategyBase

bushes, equalFlowDistributedPass, pasManager

Constructor Summary

Constructors

Constructor	Description
StaticLtmOriginBushDestLabelledStrategy(IdGroupingToken idGroupingToken, long assignmentId, TransportModelNetwork transportModelNetwork, StaticLtmSettings settings, TrafficAssignmentComponentAccessee taComponents)	Constructor

Method Summary

Modifier and Type	Method	Description
protected OriginBush[]	createEmptyBushes()	Create origin bushes for all origins with non-zero flow to any destination, remaining entries in raw array will be null and theya re placed in the array by zone id
protected PasFlowShiftExecutor	createPasFlowShiftExecutor(Pas pas, StaticLtmSettings settings)
String	getDescription()	Description of the chosen sLTM strategy for equilibration
protected void	initialiseBush(RootedLabelledBush bush, Zoning zoning, OdDemands odDemands, ShortestBushGeneralised shortestBushAlgorithm)	Loop over all destinations for bush' origin and apply demand proportionally across available shortest path(s) based on given demand and shortest path algorithm used

Methods inherited from class org.goplanit.assignment.ltm.sltm.StaticLtmBushStrategyRootLabelled

createNetworkLoading, getLoading, updateBushPass

Methods inherited from class org.goplanit.assignment.ltm.sltm.StaticLtmBushStrategyBase

createInitialSolution, createNetworkShortestBushAlgo, createNetworkShortestPathAlgo, hasConverged, initialiseBushes, isSolutionFlowEntropyMaximised, performIteration, syncBushFlowsToNetworkFlows, updateGap

Methods inherited from class org.goplanit.assignment.ltm.sltm.StaticLtmAssignmentStrategy

executeNetworkCostsUpdate, executeNetworkLoading, findCentroidVertex, getAssignmentId, getIdGroupingToken, getInfrastructureNetwork, getOdDemands, getSettings, getTrafficAssignmentComponent, getTransportNetwork, setOdDemands, updateTimePeriod, verifyNetworkLoadingConvergenceProgress

Methods inherited from class java.lang.Object

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

Constructor Detail

StaticLtmOriginBushDestLabelledStrategy

public StaticLtmOriginBushDestLabelledStrategy(IdGroupingToken idGroupingToken,
                                               long assignmentId,
                                               TransportModelNetwork transportModelNetwork,
                                               StaticLtmSettings settings,
                                               TrafficAssignmentComponentAccessee taComponents)

Constructor

Parameters:

idGroupingToken - to use for internal managed ids

assignmentId - of parent assignment

transportModelNetwork - to use

settings - to use

taComponents - to use for access to user configured assignment components

Method Detail

initialiseBush

protected void initialiseBush(RootedLabelledBush bush,
                              Zoning zoning,
                              OdDemands odDemands,
                              ShortestBushGeneralised shortestBushAlgorithm)

Loop over all destinations for bush' origin and apply demand proportionally across available shortest path(s) based on given demand and shortest path algorithm used

Specified by:

initialiseBush in class StaticLtmBushStrategyBase<RootedLabelledBush>

Parameters:

bush - to use

zoning - to use

odDemands - to use

shortestBushAlgorithm - to use

createEmptyBushes

protected OriginBush[] createEmptyBushes()

Create origin bushes for all origins with non-zero flow to any destination, remaining entries in raw array will be null and theya re placed in the array by zone id

Specified by:

createEmptyBushes in class StaticLtmBushStrategyBase<RootedLabelledBush>

Returns:

created origin bushes

createPasFlowShiftExecutor

protected PasFlowShiftExecutor createPasFlowShiftExecutor(Pas pas,
                                                          StaticLtmSettings settings)

Specified by:

createPasFlowShiftExecutor in class StaticLtmBushStrategyBase<RootedLabelledBush>

Parameters:

pas - to create flow shift executor for

settings - to use

Returns:

created executor

getDescription

public String getDescription()

Description of the chosen sLTM strategy for equilibration

Specified by:

getDescription in class StaticLtmAssignmentStrategy

Returns:

String