Hi John (and other authors of ChoiceModelR package),

I am experiencing a weird thing when using the function choicemodelr under
R3.0.1.
Before I updated to R3.0, I had used choicemodelr unde R2.15. It was always
as fast or faster than exactly the same task in Sawtooth software.
Now, I've tried to run it under R3.0.1. It seems to be doing the job. But
something is slowing it down dramatically. In the beginning, it showed time
left for estimation as 14 min. But then time passed and the time left
increased(!) instead of decreasing. My whole run took 1.8 hours. I've run
the same thing in Sawtooth - it took 13 min.
I replicated the same result under different conditions (restarted my PC,
had no other stuff running).

My PC is a 64-bit PC (Windows).
Then I asked a colleague who also has R3.0 on his PC to run my code. His PC
is a 32-bit one (Windows). Same thing happened to him. It showed time left
as 14 min in the beginning and then the time left started growing.
Then, I asked a colleague who has R2.15 (on a 32-bit Windows machine) to
run my code. It took him 12 minutes!

So, something is going on with ChoiceModelR unde R3.0


Thanks for looking into it.
-- 
Dimitri Liakhovitski

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