OUProcess Class Reference

An Ornstein-Uhlenbeck stochastic process. More...

#include <MSDriverState.h>

Collaboration diagram for OUProcess:

Public Member Functions
double	getNoiseIntensity () const
double	getState () const
	Obtain the current state of the process.
double	getTimeScale () const
	OUProcess (double initialState, double timeScale, double noiseIntensity)
	constructor
void	setNoiseIntensity (double noiseIntensity)
	set the process' noise intensity to a new value
void	setState (double state)
	set the process' state to a new value
void	setTimeScale (double timeScale)
	set the process' timescale to a new value
void	step (double dt)
	evolve for a time step of length dt.
	~OUProcess ()
	destructor

Static Public Member Functions
static SumoRNG *	getRNG ()
static double	step (double state, double dt, double timeScale, double noiseIntensity)
	static version of the step()

Private Attributes
double	myNoiseIntensity
	The noise intensity of the process.
double	myState
	The current state of the process.
double	myTimeScale
	The time scale of the process.

Static Private Attributes
static SumoRNG	myRNG
	Random generator for OUProcesses.

Detailed Description

An Ornstein-Uhlenbeck stochastic process.

Todo:

: check parameter admissibility in setter methods

Definition at line 38 of file MSDriverState.h.

Constructor & Destructor Documentation

OUProcess()

OUProcess::OUProcess	(	double	initialState,
		double	timeScale,
		double	noiseIntensity
	)

constructor

Definition at line 95 of file MSDriverState.cpp.

~OUProcess()

OUProcess::~OUProcess

(

)

destructor

Definition at line 101 of file MSDriverState.cpp.

Member Function Documentation

getNoiseIntensity()

double OUProcess::getNoiseIntensity ( ) const

inline

Definition at line 65 of file MSDriverState.h.

References myNoiseIntensity.

Referenced by MSSimpleDriverState::getErrorNoiseIntensity().

Here is the caller graph for this function:

getRNG()

static SumoRNG * OUProcess::getRNG ( )

inlinestatic

Definition at line 78 of file MSDriverState.h.

References myRNG.

Referenced by NLBuilder::initRandomness(), MSStateHandler::myStartElement(), and MSStateHandler::saveRNGs().

Here is the caller graph for this function:

getState()

double OUProcess::getState

(

)

const

Obtain the current state of the process.

Definition at line 122 of file MSDriverState.cpp.

References myState.

Referenced by MSSimpleDriverState::getErrorState(), MSSimpleDriverState::getPerceivedHeadway(), MSSimpleDriverState::getPerceivedOwnSpeed(), MSSimpleDriverState::getPerceivedSpeedDifference(), and MSSimpleDriverState::update().

Here is the caller graph for this function:

getTimeScale()

double OUProcess::getTimeScale ( ) const

inline

Definition at line 69 of file MSDriverState.h.

References myTimeScale.

Referenced by MSSimpleDriverState::getErrorTimeScale().

Here is the caller graph for this function:

setNoiseIntensity()

void OUProcess::setNoiseIntensity ( double  noiseIntensity )

inline

set the process' noise intensity to a new value

Definition at line 56 of file MSDriverState.h.

References myNoiseIntensity.

Referenced by MSSimpleDriverState::setErrorNoiseIntensity(), and MSSimpleDriverState::updateError().

Here is the caller graph for this function:

setState()

void OUProcess::setState ( double  state )

inline

set the process' state to a new value

Definition at line 61 of file MSDriverState.h.

References myState.

Referenced by MSSimpleDriverState::setAwareness(), MSSimpleDriverState::setErrorState(), and MSSimpleDriverState::updateError().

Here is the caller graph for this function:

setTimeScale()

void OUProcess::setTimeScale ( double  timeScale )

inline

set the process' timescale to a new value

Definition at line 51 of file MSDriverState.h.

References myTimeScale.

Referenced by MSSimpleDriverState::setErrorTimeScale(), and MSSimpleDriverState::updateError().

Here is the caller graph for this function:

step() [1/2]

void OUProcess::step

(

double

dt

)

evolve for a time step of length dt.

Definition at line 105 of file MSDriverState.cpp.

References myNoiseIntensity, myRNG, myState, myTimeScale, and RandHelper::randNorm().

Referenced by MSLCM_SL2015::getLateralDrift(), MSLCM_LC2013::prepareStep(), and MSSimpleDriverState::updateError().

Here is the caller graph for this function:

step() [2/2]

double OUProcess::step ( double  state, double  dt, double  timeScale, double  noiseIntensity  )

static

static version of the step()

see above

Definition at line 116 of file MSDriverState.cpp.

References myRNG, and RandHelper::randNorm().

Field Documentation

myNoiseIntensity

double OUProcess::myNoiseIntensity

private

The noise intensity of the process.

Definition at line 93 of file MSDriverState.h.

Referenced by getNoiseIntensity(), setNoiseIntensity(), and step().

myRNG

SumoRNG OUProcess::myRNG

staticprivate

Random generator for OUProcesses.

Definition at line 96 of file MSDriverState.h.

Referenced by getRNG(), step(), and step().

myState

double OUProcess::myState

private

The current state of the process.

Definition at line 85 of file MSDriverState.h.

Referenced by getState(), setState(), and step().

myTimeScale

double OUProcess::myTimeScale

private

The time scale of the process.

Definition at line 89 of file MSDriverState.h.

Referenced by getTimeScale(), setTimeScale(), and step().

---

The documentation for this class was generated from the following files:

• MSDriverState.h
• MSDriverState.cpp