# raschmix-class

##### Class "raschmix"

A fitted `raschmix`

model.

- Keywords
- classes

##### Slots

`model`

:A

`FLXMC`

object for a Rasch mixture model`prior`

:Numeric vector with prior probabilities of classes.

`posterior`

:Named list with elements

`scaled`

and`unscaled`

, both matrices with one row per observation and one column per class.`iter`

:Number of EM iterations.

`k`

:Number of classes after EM.

`k0`

:Number of classes at start of EM.

`cluster`

:Class assignments of observations.

`size`

:Class sizes.

`logLik`

:Log-likelihood at EM convergence.

`df`

:Total number of parameters of the model.

`components`

:List describing the fitted components using

`FLXcomponent`

objects.`formula`

:Object of class

`"formula"`

.`control`

:Object of class

`"FLXcontrol"`

.`call`

:The function call used to create the object.

`group`

:Object of class

`"factor"`

.`converged`

:Logical,

`TRUE`

if EM algorithm converged.`concomitant`

:Object of class

`"FLXP"`

..`weights`

:Optional weights of the observations.

`scores`

:Type of score model employed.

`restricted`

:Logical. Is the score model equal across components?

`deriv`

:Type of derivatives used for computing gradient and Hessian matrix. Analytical with sum algorithm (

`"sum"`

), analytical with difference algorithm (`"diff"`

, faster but numerically unstable), or numerical.`extremeScoreProbs`

:Estimated probability of solving either all or no items.

`rawScoresData`

:Table of raw scores from the data.

`flx.call`

:Internal call to

`stepFlexmix`

`nobs`

:Number of observations without missing values, excluding observations with an extreme score.

`identified.items`

:Factor indicating which items are identified.

##### Extends

Class `flexmix`

, directly.

##### Accessor Functions

The following functions should be used for accessing the corresponding slots:

`clusters`

:Cluster assignments of observations.

`posterior`

:A matrix of posterior probabilities for each observation.

*Documentation reproduced from package psychomix, version 1.1-8, License: GPL-2 | GPL-3*