POSG Class Reference

POSG is a simple implementation of POSGInterface. More...

#include <POSG.h>

Inheritance diagram for POSG:

Public Member Functions
double	GetDiscount (Index agentI) const
	Returns the discount parameter for agent agentI. More...
reward_t	GetRewardType (Index agentI) const
	Returns the reward type. More...
	POSG ()
void	SetDiscount (Index agentI, double d)
	Sets the discount parameter of agentI to d. More...
bool	SetInitialized (bool b)
	changed initialized status More...
void	SetNrAgents (size_t nrAgents)
	Sets the number of agents. More...
void	SetRewardType (Index agentI, reward_t r)
	Sets the reward type to reward_t r. More...
std::string	SoftPrint () const
	SoftPrints some information on the POSG. More...
Public Member Functions inherited from POSGInterface
virtual POSGInterface *	Clone () const =0
	Returns a pointer to a copy of this class. More...
virtual double	GetDiscountForAgent (Index agentI) const =0
	Returns the discount parameter. More...
virtual double	GetRewardForAgent (Index agentI, State *s, JointAction *ja) const =0
	Function that returns the reward for a state and joint action. More...
virtual reward_t	GetRewardTypeForAgent (Index agentI) const =0
	Returns the reward type. More...
virtual void	SetDiscountForAgent (Index agentI, double d)=0
	Sets the discount parameter to 0 < d <= 1. More...
virtual void	SetRewardForAgent (Index agentI, State *s, JointAction *ja, double r)=0
	Function that sets the reward for an agent, state and joint action. More...
virtual void	SetRewardTypeForAgent (Index agentI, reward_t r)=0
	Sets the reward type to reward_t r. More...
virtual	~POSGInterface ()
	Virtual destructor. More...
Public Member Functions inherited from MultiAgentDecisionProcessInterface
virtual const Scope &	GetAllAgentScope () const =0
virtual size_t	GetNrAgents () const =0
	Return the number of agents. More...
virtual std::string	GetUnixName () const =0
	Returns the base part of the problem filename. More...
virtual	~MultiAgentDecisionProcessInterface ()
	Destructor. More...

Private Attributes
std::vector< double >	_m_discount
	The discount parameter. More...
bool	_m_initialized
	is this initialized? More...
size_t	_m_nrAgents
	the number of agents More...
std::vector< reward_t >	_m_rewardType
	Do the agents get rewards or costs? More...

Detailed Description

POSG is a simple implementation of POSGInterface.

It defines a couple of functions that relate to the (types of) rewards and discount factors for each agent.

Conceptually an MultiAgentDecisionProcess that implements this interface, is a POSG: each agent his its own reward function.

Constructor & Destructor Documentation

POSG::POSG

(

)

Member Function Documentation

double POSG::GetDiscount ( Index  agentI ) const

inline

Returns the discount parameter for agent agentI.

reward_t POSG::GetRewardType ( Index  agentI ) const

inline

Returns the reward type.

void POSG::SetDiscount	(	Index	agentI,
		double	d
	)

Sets the discount parameter of agentI to d.

bool POSG::SetInitialized

(

bool

b

)

changed initialized status

Referenced by POSGDiscrete::POSGDiscrete().

void POSG::SetNrAgents

(

size_t

nrAgents

)

Sets the number of agents.

References Globals::REWARD.

Referenced by POSGDiscrete::POSGDiscrete().

void POSG::SetRewardType	(	Index	agentI,
		reward_t	r
	)

Sets the reward type to reward_t r.

At the moment only REWARD is supported.

References Globals::REWARD.

string POSG::SoftPrint

(

)

const

SoftPrints some information on the POSG.

References PrintTools::SoftPrintVector().

Referenced by POSGDiscrete::SoftPrint().

Member Data Documentation

std::vector<double> POSG::_m_discount

private

The discount parameter.

When agents have different interests (the POSG setting), they may also have different discount factors. For a POSG, however, we have one global discount factor (which typically is 1.0 in the finite horizon case).

bool POSG::_m_initialized

private

is this initialized?

size_t POSG::_m_nrAgents

private

the number of agents

std::vector<reward_t> POSG::_m_rewardType

private

Do the agents get rewards or costs?