Re: [R] Maximization of quadratic forms

2010-05-18 Thread Ravi Varadhan
Tuesday, May 18, 2010 2:38 pm Subject: [R] Maximization of quadratic forms To: r-help@r-project.org > Dear R Help, > > I am trying to fit a nonlinear model for a mean function > $\mu(Data_i,\beta)$ for a fixed covariance matrix where $\beta$ and > $\mu$ are low-dimensional

[R] Maximization of quadratic forms

2010-05-18 Thread Russell Shinohara
Dear R Help, I am trying to fit a nonlinear model for a mean function $\mu(Data_i, \beta)$ for a fixed covariance matrix where $\beta$ and $\mu$ are low- dimensional. More specifically, for fixed variance-covariance matrices $\Sigma_{z=0}$ and $\Sigma_{z=1}$ (according to a binary covariate $