hi, am Donnerstag 05 August 2010 (09:21) schrieb Thomas Friedrichsmeier: > well, I am somewhat curious as to the use-case for this.
funny, i've just used it myself to fix the inconsistent Wald test results (some got NaNs, others sane numbers) in the IRT plugin ;-) i've discussed this issue with the eRm devolpers, and they've addressed it in eRm 0.13. seems to be the default optimizer (nlm) that's causing it. if you run into this, you can now set the global object fitctrl <- "optim" to use optim() instead of nlm(). this worked for me, so for the sake of stable plugintests i've added it as an option to the Wald test dialog. if set to "optim", it now creates fitctrl in .GlobalEnv, runs Waldtest() and removes fitctrl again. maybe this will become a real option to the function (which i would prefer), but for the time being i think this should do for a solution. you can check it out in the svn commits i did earlier today. viele grüße :: m.eik -- dipl. psych. meik michalke institut f"ur experimentelle psychologie abt. f"ur diagnostik und differentielle psychologie heinrich-heine-universit"at 40225 d"usseldorf
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