[R] non-negative least squares?
Prof Brian Ripley
ripley at stats.ox.ac.uk
Mon Nov 19 15:59:25 CET 2001
On Fri, 16 Nov 2001, Robert Abugov wrote:
> In July of 1999 Douglas Bates invited R users to implement an algorithm for
> non-negative least squares based on Bates and Wolf, 1984: Communications in
> Statistics, Part B 13:841-850.
> I'm wondering if anybody has implemented this or something similar so I
> won't have to reinvent the wheel.
I just use optim() on the sum of squares with non-negativity constraints.
That did not exist in 1999.
Brian D. Ripley, ripley at stats.ox.ac.uk
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272860 (secr)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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
More information about the R-help