psy.irt package

Submodules

psy.irt.base module

class psy.irt.base.GuessLogitMixin

Bases: psy.irt.base.LogitMixin

p(guess, *args, **kwargs)

class psy.irt.base.GuessProbitMixin

Bases: psy.irt.base.ProbitMixin

p(guess, *args, **kwargs)

class psy.irt.base.LogitMixin

Bases: object

p(z)

class psy.irt.base.ProbitMixin

Bases: object

p(z)

class psy.irt.base.RaschZMixin

Bases: object

z(threshold, theta)

class psy.irt.base.ZMixin

Bases: object

z(slop, threshold, theta)

Parameters:

• slop –
• threshold –
• theta –

Returns:

psy.irt.grm module

class psy.irt.grm.Grm(scores=None, init_slop=None, init_threshold=None, max_iter=1000, tol=1e-05, gp_size=11)

Bases: object

em()

static get_gh_point(gp_size)

static p(z)

static z(slop, thresholds, theta)

psy.irt.irm module

class psy.irt.irm.Irt(scores, link='logit', params_type='2PL', init_slop=None, init_threshold=None, max_iter=1000, tol=1e-05, *args, **kwargs)

Bases: object

LINK_DT = {'logit': <class 'psy.irt.irm._LogitIrt'>, 'probit': <class 'psy.irt.irm._ProbitIrt'>}

PARAMS_TYPE_TP = ('1PL', '2PL', '3PL')

fit()

class psy.irt.irm.Mirt(dim_size, init_slop=None, init_threshold=None, max_iter=1000, tol=0.0001, *args, **kwargs)

Bases: psy.irt.irm._BaseEmIrt, psy.irt.base.LogitMixin

em()

static z(slop, threshold, theta)

Module contents