RE: Fixed elements within a block covariance matrix

From: Serge Guzy Date: January 13, 2004 technical Source: cognigencorp.com
From: Serge Guzy - GUZY@xoma.com Subject: RE: [NMusers] Fixed elements within a block covariance matrix Date: 1/13/2004 12:15 PM You can try using simulation if it is possible. I think that as long as the matrix is positive definite it will work. Sometimes indirect correlation like you suggest (X11 is correlated with X33, and X22 is correlated with X33 ) can exist while there is no direct correlation expressed through the correlation coefficient between X11 and X22 Serge Guzy President POP-PHARM Head of Pharmacometrics and Preclinical Statistics; Xoma Corporation Tel: (w) 510 204 74 76;(Business)510 527 2220

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Jan 13, 2004 Peter Bonate Fixed elements within a block covariance matrix
Jan 13, 2004 Leonid Gibiansky Re: Fixed elements within a block covariance matrix
Jan 13, 2004 Pascal Girard RE: Fixed elements within a block covariance matrix
Jan 13, 2004 Vladimir Piotrovskij RE: Fixed elements within a block covariance matrix
Jan 13, 2004 Kenneth Kowalski RE: Fixed elements within a block covariance matrix
Jan 13, 2004 Vgcasabo RE: Fixed elements within a block covariance matrix
Jan 13, 2004 Serge Guzy RE: Fixed elements within a block covariance matrix
Jan 13, 2004 Peter Bonate Fixed elements within a block covariance matrix
Jan 13, 2004 Stephen Duffull RE: Fixed elements within a block covariance matrix
Jan 13, 2004 Sam Liao RE: Fixed elements within a block covariance matrix
Jan 13, 2004 Serge Guzy RE: Fixed elements within a block covariance matrix
Jan 14, 2004 Vgcasabo RE: Fixed elements within a block covariance matrix
Jan 14, 2004 Jakob Ribbing RE: Fixed elements within a block covariance matrix
Jan 14, 2004 Leonid Gibiansky Re: Fixed elements within a block covariance matrix
Jan 14, 2004 Qi Liu Re: Fixed elements within a block covariance matrix
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