You should keep your replies on the R-help list by always cc-ing to that list.
As you were asked to do in a previous thread you started.
As I demonstrated in a previous reply, the R function optim() is perfectly
capable of minimizing or maximizing your likelihood function.
Your attempts at
Dear Berend
Thanks for your response. I will write my code and estimate the parameters
using functions optim() or nlminb(). For the code that I am trying to build for
estimation the parameters using mle via EM ahgorithm, I will rewrite it and
reformulated my question about, but before that I
On 31-08-2012, at 03:54, Salma Wafi wrote:
Hi ,
I am trying to get some estimator based on lognormal distribution when we
have left,interval, and right censored data. Since, there is now avalible
pakage in R can help me in this, I had to write my own code using Newton
Raphson method
On Thu, 30 Aug 2012, Salma Wafi wrote:
I am trying to get some estimator based on lognormal distribution when we
have left,interval, and right censored data.
Take a look at the NADA package. For left-censored data you can use cenmle
with dist = 'lognormal'. Survival analyses work well for
Hi ,
I am trying to get some estimator based on lognormal distribution when we have
left,interval, and right censored data. Since, there is now avalible pakage in
R can help me in this, I had to write my own code using Newton Raphson method
which requires first and second derivative of log
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