Re: [R] Help with maximum likelihood estimation

2019-06-26 Thread peter dalgaard
Bricks fly fine with sufficient thrust, but you have lff with a mu argument that never gets used, so the negative log-likelihood is constant and mle() cannot minimize it. You need to read up on the definition of (log-) likelihood and write a proper one for your problem. -pd > On 26 Jun 2019,

[R] Help with maximum likelihood estimation

2019-06-26 Thread avadhoot velankar
I am analyzing animal movement pattern using levy flight pattern and want to fit power function to observed data and estimate exponent using Maximum Likelihood Estimation. I am using lff<-function(mu){1-1/mean(log(x))} library(stats4) mle(lff, start = list(mu = 1)) where x is the observed data.