Multiple linear regression
Dear R-users, I've a question regardiing multiple linear regression. Is it possible to regress a function of the type y=b0+b1*x1+b2*x2 constraining the partial derivatives dy/dx1 and dy/dx2 to be greater than 0 ???
One easy possibility is to fit it as a nonlinear regression: y=b0+exp(b1)*x1+exp(b2)*x2 Jim
Thank you very much for any possible suggestion. Best regards Marco -- Marco Pagani - PhD Student Dipartimento di Scienze della Terra - Sezione Geofisica Universita' degli Studi di Milano c/o CSGAQ - CNR via Bassini, 15 - I-20133 Milano - Italia tel: +39-02-23699455 fax: +39-02-26680987 / +39-02-2362946 -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._