I use Bilog from SSI. Bilog can handle 1, 2, and 3-parameter model. I am
not sure if it can accept 890000 obs. Bilog has a Windows version. You
can assemble the program by selecting options from the pull down menu.
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Chong-ho (Alex) Yu, Ph.D., MCSE, CNE
Academic Research Professional/Manager
Educational Data Communication, Assessment, Research and Evaluation
Farmer 418
Arizona State University
Tempe AZ 85287-0611
Email: [EMAIL PROTECTED]
URL:http://seamonkey.ed.asu.edu/~alex/
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