Date: Thu, 10 Oct 1996 10:36:05 -0400
Reply-To: "Mr. Jinping Shi" <shi@UMBC.EDU>
Sender: "SAS(r) Discussion" <SAS-L@UGA.CC.UGA.EDU>
From: "Mr. Jinping Shi" <shi@UMBC.EDU>
Organization: University of Maryland, Baltimore County
Subject: Nonnegative Coefficients in PROC REG?
I want to fit linear regression
y=a + b_1*x_1 +b_2*x_2 + e
and want to have all a and b non-negative. How should I do?
The restrict option in Proc Reg only promisies equations.
Thanks in advance.