RE: Fixed elements within a block covariance matrix

From: Kenneth Kowalski Date: January 13, 2004 technical Source: cognigencorp.com
From: "Kowalski, Ken" - Ken.Kowalski@pfizer.com Subject: RE: [NMusers] Fixed elements within a block covariance matrix Date: 1/13/2004 9:38 AM Pete, Leonid beat me to it. The block structure that Leonid gives below is the banded structure. Note that in NONMEM you can specify 0's in a lower triangle portion of the Omega block (i.e., banded structure) and NONMEM will know to fix those elements to zero (i.e., you don't use the FIX option). Ken