RE: WRES AND OUTLIER IDENTIFICATION/EXCLUSION

From: "Nandy, Partha [PRDUS]" PNandy@prdus.jnj.com Subject: RE: [NMusers] WRES AND OUTLIER IDENTIFICATION/EXCLUSION Date: Wed, 27 Sep 2006 07:15:30 -0400 Hi All, Thanks for discussing this outlier issue. It is always very difficult to decide whether to keep the outlying data points in or remove those. I have a question though; For Additive error models I think what Mats suggested works great. What is your suggestion for a ADD+PROP Error models? Should one use OMEGAs on both ADD and PROP Errors? Also, bear in mind that if one is using AIC or any other such criteria to select models, one needs to now account for additional parameters.. I am interested in your opinion... Kind Regards, Partha