[R] mixture models

[Ingmar Visser]

Dear Rita,

The depmixS4 package handles such models. It is still in beta testing  
so I would
appreciate it if you share your experiences with it. Also let me know  
if you have
further questions.

Best, Ingmar


On 16 Mar 2009, at 10:19, Rita Gaio wrote:

>
> Dear R users,
> I want to apply latent class models (mixture models) with covariates  
> in the
> case of continuous and categorical variables.  My questions are the  
> follow:
> a) the only package in R that can handle mixture models with data of  
> mixed
> type is moc (which unfortunately was left orphaned recently); do you  
> know of
> any other?
> b) I really need to incorporate covariates in my model; in the moc  
> manual,
> the author mentions it can handle covariates, but I am straggling  
> with the
> instructions. More precisely, I have:
>     b.1) continuous covariates
>     b.2) categorical (ordinal 2- and 3-level) variables
>     b.3) continuous variables
> and would like to consider the covariates conditional effect on the
> probability of each latent class and
> on the joint distribution of the (mixed type) variables within each  
> class.
>
> Has anyone ever tried to do a similar thing? If so, can I please  
> borrow your
> correspondent piece of code?
>
> Thank you so much in advance.
> Rita.
> -- 
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