[R] quadratic programming-maximization instead of minization

[Ken Hutchison]

I don't have experience with this in R and I'm not sure I understand the question that well but maybe something like nearPD()?
  Ken Hutchison


On Jan 2, 2012, at 6:36 AM, riccardo24 <riccardo.giacomelli at gmail.com> wrote:

> Hi, I need to maximize a quadratic function under constraints in R.
> For minimization I used solve.QP but for maximization it is not useful since
> the matrix D of the quadratic function
> should be positive definite hence I cannot simply change the sign.
> 
> any suggestion ?
> thanks
> 
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