Hope to get some clarity from the creators of a (wonderful) package
ChoiceModelR. I am using the main function 'choicemodelr'.

Everything works.

?choicemodelr says "average of MCMC draws of unit-level model coefficients
are written to Xbetas.csv"
Question 1: Is this a typo? The real file created in the working directory
seems to be "Rbetas.csv"
Questions 2: Are these the averages of the 'use' draws (specified in my
choicemodelr statement)?
Question 3: If I had constraints, I assume these averages will be "taking
into account constraints", right?

?choicemodelr also says that choicemodelr produces an object that contains,
among other things, two elemens:



betadraw

An ni by natt by floor(use/keep) array of MCMC random draws of unit-level
multinomial logit model parameter estimates.

betadraw.c

An ni by natt by floor(use/keep) array of constrained MCMC random draws of
unit-level multinomial logit model parameter estimates.



If I do:

apply(out$betadraw.c,c(1,2),mean)

then what is the difference between the result and the file written to Disk?

One difference I noticed:

apply(out$betadraw.c, c(1,2),mean) contains as many columns as parameters,
not as many columns as the number of levels.

What else?



Thank you very much!


-- 
Dimitri Liakhovitski

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