NcmFitESMCMCWalkerStretch: NumCosmo Reference Manual

NcmFitESMCMCWalkerStretch

NcmFitESMCMCWalkerStretch — Ensemble sampler Markov Chain Monte Carlo walker - stretch move.

Stability Level

Stable, unless otherwise indicated

Functions

NcmFitESMCMCWalkerStretch *	ncm_fit_esmcmc_walker_stretch_new ()
void	ncm_fit_esmcmc_walker_stretch_set_scale ()
gdouble	ncm_fit_esmcmc_walker_stretch_get_scale ()
void	ncm_fit_esmcmc_walker_stretch_set_box ()
void	ncm_fit_esmcmc_walker_stretch_set_box_mset ()
void	ncm_fit_esmcmc_walker_stretch_multi ()

Properties

gboolean	multi-stretch	Read / Write / Construct
double	scale	Read / Write / Construct

Types and Values

#define	NCM_TYPE_FIT_ESMCMC_WALKER_STRETCH
	NcmFitESMCMCWalkerStretch

Object Hierarchy

    GObject
    ╰── NcmFitESMCMCWalker
        ╰── NcmFitESMCMCWalkerStretch

Description

Implementing stretch move walker for NcmFitESMCMC (affine invariant).

Functions

ncm_fit_esmcmc_walker_stretch_new ()

NcmFitESMCMCWalkerStretch *
ncm_fit_esmcmc_walker_stretch_new (guint nwalkers,
                                   guint nparams);

Creates a new NcmFitESMCMCWalkerStretch to be used with nwalkers .

Parameters

nwalkers	number of walkers
nparams	number of parameters

Returns

a new NcmFitESMCMCWalkerStretch.

[transfer full]

ncm_fit_esmcmc_walker_stretch_set_scale ()

void
ncm_fit_esmcmc_walker_stretch_set_scale
                               (NcmFitESMCMCWalkerStretch *stretch,
                                const gdouble a);

Sets the value of the scale $a > 1$.

Parameters

stretch	a NcmFitESMCMCWalkerStretch
a	new scale $a > 1$

ncm_fit_esmcmc_walker_stretch_get_scale ()

gdouble
ncm_fit_esmcmc_walker_stretch_get_scale
                               (NcmFitESMCMCWalkerStretch *stretch);

Gets the value of the scale $a > 1$.

Parameters

stretch

a NcmFitESMCMCWalkerStretch

Returns

current value of $a$.

ncm_fit_esmcmc_walker_stretch_set_box ()

void
ncm_fit_esmcmc_walker_stretch_set_box (NcmFitESMCMCWalkerStretch *stretch,
                                       guint n,
                                       const gdouble lb,
                                       const gdouble ub);

Sets box sampling for the n -th parameter using lb as lower bound and ub as upper bound.

Parameters

stretch	a NcmFitESMCMCWalkerStretch
n	parameter index
lb	lower bound
ub	upper bound

ncm_fit_esmcmc_walker_stretch_set_box_mset ()

void
ncm_fit_esmcmc_walker_stretch_set_box_mset
                               (NcmFitESMCMCWalkerStretch *stretch,
                                NcmMSet *mset);

Sets box sampling for the parameters using bounds from mset .

Parameters

stretch	a NcmFitESMCMCWalkerStretch
mset	a NcmMSet

ncm_fit_esmcmc_walker_stretch_multi ()

void
ncm_fit_esmcmc_walker_stretch_multi (NcmFitESMCMCWalkerStretch *stretch,
                                     gboolean multi);

Sets whether it should use multi-stretchs in a single step.

Parameters

stretch	a NcmFitESMCMCWalkerStretch
multi	a boolean

Types and Values

NCM_TYPE_FIT_ESMCMC_WALKER_STRETCH

#define NCM_TYPE_FIT_ESMCMC_WALKER_STRETCH (ncm_fit_esmcmc_walker_stretch_get_type ())