Displaying 5 results from an estimated 5 matches for "ckang2".
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2004 Jan 05
3
optim function : "BFGS" vs "L-BFGS-B"
...to know is that can I get the same result by using
L-BFGS-B method?
+++++++++++++++++++++++++++++++++++++++++++++++++++++
Changku Kang
National Center for Environmental Assessment
EPA (B211F)
919-541-1396
919-541-0245 (fax)
Kang.Changku at epa.gov
Graduate Student
Department of Statistics, NCSU
ckang2 at stat.ncsu.edu
919-513-2956
+++++++++++++++++++++++++++++++++++++++++++++++++++++
2004 Jan 13
0
nlminb(Splus) vs optim(R)
...from Splus to R? Or any suggestions or comments?
Thanks in advance.
+++++++++++++++++++++++++++++++++++++++++++++++++++++
Changku Kang
National Center for Environmental Assessment
EPA (B211F)
919-541-1396
919-541-0245 (fax)
Kang.Changku at epa.gov
Graduate Student
Department of Statistics, NCSU
ckang2 at stat.ncsu.edu
919-513-2956
+++++++++++++++++++++++++++++++++++++++++++++++++++++
2004 Jun 23
1
Error message handling
...ay I can put *my* message after this error occur?
Thanks in advance
+++++++++++++++++++++++++++++++++++++++++++++++++++++
Changku Kang
National Center for Environmental Assessment
EPA (B211F)
919-541-1396
919-541-0245 (fax)
Kang.Changku at epa.gov
Graduate Student
Department of Statistics, NCSU
ckang2 at stat.ncsu.edu
919-513-2956
+++++++++++++++++++++++++++++++++++++++++++++++++++++
2007 Sep 27
1
error message in eval
Hello, Listers
I'm trying to run blloean logit model with R.
My code is:
> library(boolean)
> library(foreign)
> pr <- read.dta ("prcore1.dta")
> bp <- boolprep ("(a&b)|c", "cwt", a="O1", b="t", c="DM2
> + ah + md + con + n3 + rel + slo + pyrs
> + sp1 + sp2 + spl3")
> answer <- boolean (bp, link =
2007 Sep 27
0
convergence problem in boolean logit
Hello, folks
when I ran my boolean logit model in R, I got an error message as
> answer <- boolean (bp, link = "logit", method = "BFGS", data=pr2)
27061 observations dropped due to missing data.
Warning message:
fitted probabilities numerically 0 or 1 occurred in: glm.fit(x = X, y
= Y, weights = weights, start = start, etastart = etastart,
Could you anyone advise me