Re: [R] Optimization: non-liner constraints

2008-01-15 Thread Gabor Grothendieck
On Jan 15, 2008 9:46 AM, livia <[EMAIL PROTECTED]> wrote: > > Hello everyone, > > I would like to optimize the function "fqp" as following: > > a=c(0.2,0.3,0.4) > vcov=matrix(c(1,2,3,3,2,2,2,3,1),3,3) > c=2 > fqp <- function(b) {t(b)%*%a-0.5*c*((t(b)%*%vcov)%*%b)} > > with constraints like ((t(b)%*

[R] Optimization: non-liner constraints

2008-01-15 Thread livia
Hello everyone, I would like to optimize the function "fqp" as following: a=c(0.2,0.3,0.4) vcov=matrix(c(1,2,3,3,2,2,2,3,1),3,3) c=2 fqp <- function(b) {t(b)%*%a-0.5*c*((t(b)%*%vcov)%*%b)} with constraints like ((t(b)%*%vcov)%*%b) <= 0.5 Is there a function of doing it? Many thanks. -- View t