Displaying 7 results from an estimated 7 matches for "wahba".
2011 Dec 16
1
mgcv 1.7-12 crashes R
...Copyright (C) 2011 The R Foundation for Statistical Computing
ISBN 3-900051-07-0
Platform: x86_64-pc-linux-gnu (64-bit)
> library(mgcv)
This is mgcv 1.7-12. For overview type 'help("mgcv-package")'.
> dat <- gamSim(1 , n=400 , dist="normal",scale = 2)
Gu & Wahba 4 term additive model
> gam( y ~ s(x0) , data = dat)
Aborted
</pre>
I am using Ubuntu 11.10 - amd64, R version 2.14.0 and mgcv 1.7-12.
any ideas?
Reinhard
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2004 Mar 03
8
need help with smooth.spline
Dear R listers,
When using smooth.spline to interpolate data, results are generally
good. However, some cases produce totally unreasonable results.
The data are values of pressure, temperature, and salinity from a
probe that is lowered into the ocean, and the objective is to
interpolate temperature and salinity to specified pressures. While
smooth.spline provides excellent values at the
2013 Apr 23
1
GAM Penalised Splines - Intercept
Hey all,
I'm using the gam() function inside the mgcv package to fit a penalised spline to some data. However, I don't quite understand what exactly the intercept it includes by default is / how to interpret it.
Ideally I'd like to understand what the intercept is in terms of the B-Spline and/or truncated power series basis representation.
Thanks!
2004 Apr 13
1
Trouble with Skype
Hi,
I've managed to get Skype running under Debian with the latest Debian
release of wine. The sound is perfect, and there are no connection problems,
but I noticed the following:
1) Sound from my microphone disappears ONLY when I start some other
application or switch to another application. I can only vouch for this in
KDE, and it happens whenever anything accesses the soundcard, so
2003 Sep 14
3
Re: Logistic Regression
Christoph Lehman had problems with seperated data in two-class logistic regression.
One useful little trick is to penalize the logistic regression using a quadratic penalty on the coefficients.
I am sure there are functions in the R contributed libraries to do this; otherwise it is easy to achieve via IRLS
using ridge regressions. Then even though the data are separated, the penalized
2006 Apr 28
1
gauss.quad.prob
I've written a series of functions that evaluates an integral from -inf to a or b to +inf using equally spaced quadrature points along a normal distribution from -10 to +10 moving in increments of .01. These functions are working and give very good approximations, but I think they are computationally wasteful as I am evaluating the function at *many* points.
Instead, I would prefer to use
2000 Apr 30
0
Help Need with aov()
Hi there,
I'm using R1.0.1 Windows 98.
This file contains some inputs and an aov function code. Can someone
check it for me? Somehow I got completely different answer when typing
them in R and in Splus.
Splus gives me this:
> summary( Turnip.aov )
Error: Blocks
Df Sum of Sq Mean Sq F Value Pr(F)
Residuals 3 163.7367 54.57891
Error: Plots %in% Blocks