R help - Nov 2011 - A simulation project based Graded Response Model with multiple groups

Hi All,

I am a beginner in R, and I am planning to learn it by finishing a project.

The simulation involves in multiple criteria. Specifically, it is based on
Graded Response Model according to IRT. Also, it needs to generate multiple
datasets which fit different levels of criteria, like multiple groups
(group number=2,3,4,6,9, 12), different sample size for each group (N=250,
500, and 1000), different values of as and bs, and some other criteria.

How can I do it in R? Do you think it would be easier to do it in other
languages other than R?

I would very appreciate your inputs.

Thank you.

Sincerely,
Jialin

	[[alternative HTML version deleted]]