by T.
Employing these pseudo-osservations the copula parameters are estimated
via maximum likelihood estimation. I don't know the R-code about MLE. I
tried with optim but i don't have the function fn. I tried also with
procedure that explained by Christian Cech but it's quite complex. How do i
write
click here
This is a link http://www.w3schools.com
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Hello Liang,
Besides looking at ?optim, you may also want to look into this nice
working example www.mayin.org/ajayshah/KB/R/documents/mle/mle.html
Regards,
Francisco
Francisco J. Zagmutt
Vose Consulting
1643 Spruce St., Boulder
Boulder, CO, 80302
USA
www.voseconsulting.com
Liang Wang
Hi, dear R users
I am a newbie in R and I need to use the method of meximum likelihood to fit a
Weibull distribution to my survival data. I use optim as follows:
optim(c(1.14,0.25),weibull.like,mydata=mydata,method=L-BFGS-B,hessian = TRUE)
My question is: how do I setup the constraints that
Please read ?optim and about its arguments
lower, upperBounds on the variables for the L-BFGS-B method.
Uwe Ligges
Liang Wang wrote:
Hi, dear R users
I am a newbie in R and I need to use the method of meximum likelihood to fit a Weibull
distribution to my survival data. I use optim as
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