[R] MLE with R

2012-12-23 Thread sensei88
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

Re: [R] MLE with R

2012-12-23 Thread radhi
click here This is a link http://www.w3schools.com -- View this message in context: http://r.789695.n4.nabble.com/MLE-with-R-tp4653818p4653819.html Sent from the R help mailing list archive at Nabble.com. __ R-help@r-project.org mailing list

Re: [R] MLE in R

2009-12-07 Thread Francisco J. Zagmutt
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

[R] MLE in R

2009-12-06 Thread 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

Re: [R] MLE in R

2009-12-06 Thread Uwe Ligges
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