bdm::EKFCh_dQ Class Reference

Extended Kalman filter in Choleski form with unknown diagonal Q. More...

#include <ekf_templ.h>

List of all members.

Public Member Functions
void	condition (const vec &Q0)
	Substitute val for rvc.
BM *	_copy_ () const
	copy constructor duplicated - calls different set_parameters
void	set_parameters (diffbifn *pfxu, diffbifn *phxu, const chmat Q0, const chmat R0)
	Set nonlinear functions for mean values and covariance matrices.
void	set_parameters (const mat &A0, const mat &B0, const mat &C0, const mat &D0, const chmat &Q0, const chmat &R0)
	Set parameters with check of relevance.
void	bayes (const vec &dt)
	Here dt = [yt;ut] of appropriate dimensions.
void	set_statistics (const vec &mu0, const chmat &P0)
void	set_est (const vec &mu0, const chmat &P0)
	Set estimate values, used e.g. in initialization.
const epdf &	posterior () const
	access function
const enorm< chmat > *	_e () const
mat &	__K ()
	access function
vec	_dP ()
	access function
virtual string	ToString ()
	This method returns a basic info about the current instance.
virtual void	from_setting (const Setting &root)
	This method arrange instance properties according the data stored in the Setting structure.
virtual void	to_setting (Setting &root)
	This method save all the instance properties into the Setting structure.
Mathematical operations
virtual void	bayesB (const mat &Dt)
	Batch Bayes rule (columns of Dt are observations).
virtual double	logpred (const vec &dt) const
vec	logpred_m (const mat &dt) const
	Matrix version of logpred.
virtual epdf *	epredictor () const
	Constructs a predictive density .
virtual mpdf *	predictor () const
	Constructs a conditional density 1-step ahead predictor.
Access to attributes
const RV &	_drv () const
void	set_drv (const RV &rv)
void	set_rv (const RV &rv)
double	_ll () const
void	set_evalll (bool evl0)
Protected Attributes
diffbifn *	pfxu
	Internal Model f(x,u).
diffbifn *	phxu
	Observation Model h(x,u).
mat	preA
	pre array (triangular matrix)
mat	postA
	post array (triangular matrix)
RV	rvy
	Indetifier of output rv.
RV	rvu
	Indetifier of exogeneous rv.
int	dimx
	cache of rv.count()
int	dimy
	cache of rvy.count()
int	dimu
	cache of rvu.count()
mat	A
	Matrix A.
mat	B
	Matrix B.
mat	C
	Matrix C.
mat	D
	Matrix D.
chmat	Q
	Matrix Q in square-root form.
chmat	R
	Matrix R in square-root form.
enorm< chmat >	est
	posterior density on $x_t$
enorm< chmat >	fy
	preditive density on $y_t$
mat	_K
	placeholder for Kalman gain
vec &	_yp
	cache of fy.mu
chmat &	_Ry
	cache of fy.R
vec &	_mu
	cache of est.mu
chmat &	_P
	cache of est.R
RV	drv
	Random variable of the data (optional).
double	ll
	Logarithm of marginalized data likelihood.
bool	evalll
	If true, the filter will compute likelihood of the data record and store it in ll . Set to false if you want to save computational time.
Extension to conditional BM
This extension is useful e.g. in Marginalized Particle Filter (bdm::MPF). Alternatively, it can be used for automated connection to DS when the condition is observed
const RV &	_rvc () const
	access function
RV	rvc
	Name of extension variable.
Logging of results
virtual void	set_options (const string &opt)
	Set boolean options from a string recognized are: "logbounds,logll".
virtual void	log_add (logger &L, const string &name="")
	Add all logged variables to a logger.
virtual void	logit (logger &L)
ivec	LIDs
	IDs of storages in loggers 4:[1=mean,2=lb,3=ub,4=ll].
ivec	LFlags
	Flags for logging - same size as LIDs, each entry correspond to the same in LIDs.

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Detailed Description

Extended Kalman filter in Choleski form with unknown diagonal Q.

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Member Function Documentation

virtual double bdm::BM::logpred

(

const vec &

dt

)

const [inline, virtual, inherited]

Evaluates predictive log-likelihood of the given data record I.e. marginal likelihood of the data with the posterior integrated out.

Reimplemented in bdm::ARX, bdm::MixEF, and bdm::multiBM.

References it_error.

Referenced by bdm::BM::logpred_m().

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

• ekf_templ.h