Displaying 5 results from an estimated 5 matches for "abugov".
2001 Nov 20
0
Summary: non-negative least squares
Thank you Brian Ripley, Gardar Johannesson, and Marcel Wolbers for your
prompt
and friendly help! I will share any further learnings as I move through
these suggestions. -Bob Abugov
Brian Ripley wrote:
I just use optim() on the sum of squares with non-negativity constraints.
That did not exist in 1999.
Gardar Johannesson wrote:
You can always just use the quadratic programing library in R (quadprog).
That is, if you have
y as your data vector
X as your design matrix
Th...
2001 Jun 08
2
Will R run in Batch mode?
A quick newbie question: Can R be run in batch mode from the command
line?I'd like to use input files and get output files. If so, where can I
find the documentation? help(batch) doesn't help.
Thanks!
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2001 Nov 16
1
non-negative least squares?
...r
non-negative least squares based on Bates and Wolf, 1984: Communications in
Statistics, Part B 13:841-850.
<http://www.ens.gu.edu.au/robertk/R/help/99b/0058.html>
I'm wondering if anybody has implemented this or something similar so I
won't have to reinvent the wheel.
Thanks!
Bob Abugov
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2001 May 09
0
Coplot
When I use the hills data in Maindonald's text (below) and apply
coplot(time ~ distance | climb, data=hills, overlap=0.0, number=3)
the graphs do not appear to line up with the conditional axis climb.
Is this a bug or am I missing something as an R newbie?
Thanks,
Bob Abugov
distance climb time
Greenmantle 2.5 650 16.083
Carnethy 6.0 2500 48.350
Craig Dunain 6.0 900 33.650
Ben Rha 7.5 800 45.600
Ben Lomond 8.0 3070 62.267
Goatfell 8.0 2866 73.217
Bens of Jura...
2001 Nov 02
0
Applying lm() to weighted cell.means
...ights'
option in lm(). To calculate summary statistics, we would like to be able
to make a call such as:
summary.cell(fit.cell, cov=diag(c(var.y0,var.y1)), n=table(fit.raw$x))
As much as possible, we would like to avoid re-writing summary.lm().
Thanks in advance,
Bob and Eric
-----
Robert Abugov
Compete, Inc.
Boston, MA 02116
<bob at compete.com>
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