Displaying 2 results from an estimated 2 matches for "tavera".
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tavern
2013 Apr 21
1
Using copulas with user-defined marginal functions
I am trying to make a loglikelihood function using copulas. I am trying to
use mvdc to find the density function. When I run this I got the error that
the pdf and cdf of my function tobit doesn't exist. Can somebody guide me
where my mistake is?
dtobit <- function(beta,sigma, x, y) {ifelse(y>0, dnorm(y,x%*%beta,
sigma),(1-pnorm((x%*%beta)/sigma)))}
ptobit <- function(beta,sigma, x,
2013 Apr 22
0
Copula fitMdvc:
Hello,
I am trying to do a fit a loglikelihood function with Multivariate
distribution via copulas with fitMdvc. The problem is that it
doesn't recognize that my beta is a vector of km parameter and when I try
to run it it say that the length of my initial values is not the same as
the parameter.
Can somebody guide me where my mistake is.
Thanks,
Elisa.
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