search for: sdfrost

...andom effects)? Best wishes Simon Simon D.W. Frost, M.A., D.Phil. Department of Pathology University of California, San Diego Antiviral Research Center (Formerly: UCSD Treatment Center) 150 W. Washington St., Suite 100 San Diego, CA 92103 USA Tel: +1 619 543 8080 x275 Fax: +1 619 298 0177 Email: sdfrost at ucsd.edu Work W3: http://www.avrctrials.org Personal W3: http://www.simonfrost.com -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]...

...can be used to estimate the correlation in fluctuations? Best Simon Simon D.W. Frost, M.A., D.Phil. Department of Pathology University of California, San Diego Antiviral Research Center 150 W. Washington St., Suite 100 San Diego, CA 92103 USA Tel: +1 619 543 8080 x275 Fax: +1 619 298 0177 Email: sdfrost at ucsd.edu The information transmitted in this e-mail is intended only for the person(s) or entity to which it is addressed and may contain CONFIDENTIAL and/or privileged material. Any review, re-transmission, dissemination or other use of or taking of any action in reliance upon this information...

...ts when I use cubic2. Any ideas? Thanks Simon -- Simon D.W. Frost, MA DPhil Adjunct Assistant Professor Department of Pathology University of California, San Diego UCSD Antiviral Research Center 150 W. Washington St. San Diego, CA 92103 USA Tel: +1 619 543 8080 Ext 275 Fax: +1 619 298 0177 Email: sdfrost at ucsd.edu

...he various matrices would be really helpful. Best Simon -- Simon D.W. Frost, D.Phil. Assistant Adjunct Professor of Pathology University of California, San Diego Mailcode 8208 UCSD Antiviral Research Center 150 W. Washington St. San Diego, CA 92103 Tel: +1 619 543 8898 Fax: +1 619 543 5094 Email: sdfrost at ucsd.edu

Dear R-Help, I'm trying to fit a model of the following form using gnls. I've fitted it using nlsList with the following syntax: nlsList(Y~log(exp(a0-a1*X)+exp(b0-b1*X))|K,start=list (a0=6,a1=0.2,b0=4.5,b1=0.001),data=data.frame(Y=y,X=X,K=k))) which works just fine: <snip> Coefficients: a0 a1 b0 b1 1 5.459381 0.5006811 5.137458 -0.0040548687

Dear R-Help List, I'm trying to implement Firth's (1993) bias correction for log-linear models. Firth (1993) states that such a correction can be implemented by supplementing the data with a function of h_i, the diagonals from the hat matrix, but doesn't provide further details. I can see that for a saturated log-linear model, h_i=1 for all i, hence one just adds 1/2 to each count,

...nalize the other parameters? Thanks for any help! Simon -- Simon D.W. Frost, D.Phil. Assistant Adjunct Professor of Pathology University of California, San Diego Mailcode 8208 UCSD Antiviral Research Center 150 W. Washington St. San Diego, CA 92103 Tel: +1 619 543 8898 Fax: +1 619 543 5094 Email: sdfrost at ucsd.edu

Dear R-Help, I've had some problems installing the R 1.7.0 binary on Windows XP Professional. If I launch R from the Start Menu or the Desktop, R crashes. However, if I launch by double-clicking on an .RData file, R loads up just fine. I've never had any problems with previous versions/OS. Has anyone else encountered this problem? Thanks! Simon