[R] lm.ridge in library(MASS) produces inconsistent parameter estimates as compared to matrix algebra

2010-05-28 Thread Georg D. Blind
Dear all, using the hkb estimator obtained from lm.ridge in the below equation (Formula 6 from this article: http://www3.interscience.wiley.com/cgi-bin/fulltext/122484280/PDFSTART beta^hat(k) = ((x'x + kI)^-1)x'y, where x matrix of independent variables y vector of dependent variables k hkb esti

[R] Orthogonal regression in R

2009-11-27 Thread Georg D. Blind
Dear R-Users! The most recent entries on orthogonal regression that I have found on this list date back to 2005. Is there, by now, any package available that allows for a multivariate orthogonal regression in R? Thanks and best regards. Georg georg.blind at gmx.net _