BGforStageCreation Class Reference

BGforStageCreation is a class that provides some functions to aid the construction of Bayesian games for a stage of a Dec-POMDP. More...

#include <BGforStageCreation.h>

Public Member Functions
virtual	~BGforStageCreation ()
	Destructor. More...

Protected Member Functions
void	Fill_FirstOHtsI (const PlanningUnitMADPDiscrete *pu, Index ts, std::vector< Index > &firstOHtsI)
	Extends a previous policy jpolPrevTs to the next stage. More...
void	Fill_jaI_Array (const PlanningUnitMADPDiscrete *pu, Index ts, Index joIs[], const boost::shared_ptr< const JointPolicyDiscretePure > &jpolPrevTs, Index *jaI_arr)
	Gets the joint observation history from joI_Array. More...
void	Fill_joI_Array (const PlanningUnitMADPDiscrete *pu, const Index ts, const std::vector< Index > &indTypes, const std::vector< Index > &firstOHtsI, Index *joI_arr)
	Fills the array of joint observation given the individual types and offsets (firstOHtsI). More...

Detailed Description

BGforStageCreation is a class that provides some functions to aid the construction of Bayesian games for a stage of a Dec-POMDP.

this is a dummy class that only contains static functions. (but by inheriting from this, derived classes can use these functions)

Constructor & Destructor Documentation

virtual BGforStageCreation::~BGforStageCreation ( )

inlinevirtual

Destructor.

Member Function Documentation

void BGforStageCreation::Fill_FirstOHtsI ( const PlanningUnitMADPDiscrete *  pu, Index  ts, std::vector< Index > &  firstOHtsI  )

protected

Extends a previous policy jpolPrevTs to the next stage.

This function extends a previous policy jpolPrevTs for ts-1 with the behavior specified by the policy of the BayesianGame for time step ts (jpolBG). jpolPrevTs - a joint policy for the DecPOMDP up to time step ts-1 (i.e. with depth=ts-2) jpolBG - a joint policy for the BayesianGame for time step ts. nrOHts - a vector that specifies the number of observation histories for eac agents at time step ts. firstOHtsI - a vector that specifies the index of the first time step ts observation history for each agent (this functions as the offset in the conversion BG->DecPOMDP index conversion).

returns a new JointPolicyDiscretePure (so it must be explicitly deleted) PartialJointPolicyDiscretePure* ConstructExtendedPolicy( PartialJointPolicyDiscretePure & jpolPrevTs , JointPolicyDiscretePure& jpolBG , std::vector<size_t>& nrOHts , std::vector<Index>& firstOHtsI);Fills the (empty) vector firstOHtsI, with the indices (for each agent) of the first observation history of time step ts.

References Globals::CastLIndexToIndex(), PlanningUnitMADPDiscrete::GetFirstObservationHistoryIndex(), and PlanningUnitMADPDiscrete::GetNrAgents().

void BGforStageCreation::Fill_jaI_Array ( const PlanningUnitMADPDiscrete *  pu, Index  ts, Index  joIs[], const boost::shared_ptr< const JointPolicyDiscretePure > &  jpolPrevTs, Index *  jaI_arr  )

protected

Gets the joint observation history from joI_Array.

Fills the array jaI_arr with the joint actions taken for the JOHs as specified by the array of joint observations joIs according to jpolPrevTs.

References PlanningUnitMADPDiscrete::GetSuccessorJOHI().

void BGforStageCreation::Fill_joI_Array ( const PlanningUnitMADPDiscrete *  pu, const Index  ts, const std::vector< Index > &  indTypes, const std::vector< Index > &  firstOHtsI, Index *  joI_arr  )

protected

Fills the array of joint observation given the individual types and offsets (firstOHtsI).

References PlanningUnitMADPDiscrete::GetNrAgents(), PlanningUnitMADPDiscrete::GetObservationHistoryArrays(), and PlanningUnitMADPDiscrete::IndividualToJointObservationIndices().