Displaying 20 results from an estimated 3000 matches similar to: "predict.nls confidence intervals"
2010 Dec 30
1
Different results in glm() probit model using vector vs. two-column matrix response
Hi - I am fitting a probit model using glm(), and the deviance and residual degrees of freedom are different depending on whether I use a binary response vector of length 80 or a two-column matrix response (10 rows) with the number of success and failures in each column. I would think that these would be just two different ways of specifying the same model, but this does not appear to be the case.
2013 Aug 28
1
volume on btrfs brick and copy-on-write
Hello
Is it possible to take advantage of copy-on-write implemented in btrfs if
all bricks are stored on it? If not is there any other mechanism (in
glusterfs) which supports CoW?
regards
--
Maciej Ga?kiewicz
Shelly Cloud Sp. z o. o., Sysadmin
http://shellycloud.com/, macias at shellycloud.com
KRS: 0000440358 REGON: 101504426
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2009 Mar 22
1
Emailing
Hi,
I am trying to send emails out using ActionMailer. Currently, the
console shows that everything is sending out correctly, but I am not
actually receiving any emails.
Thanks in advance,
Shelly
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2007 Jun 01
1
AIC consistency with S-PLUS
Hello-
I understand that log-likelihoods are bound to differ by constants, but if i estimate AIC for a set of simple nested linear models using the following 4 methods, shouldn't at least two of them produce the same ordering of models?
in R:
extractAIC
AIC
in S-PLUS:
AIC
n*log(deviance(mymodel)/n) + 2*p
I find it troubling that these methods all give me different answers as to the best
2013 Oct 16
2
Re: libvirtError: Unable to add bridge br0 port vnet0: Operation not supported
On 16 October 2013 13:55, Daniel P. Berrange <berrange@redhat.com> wrote:
>
> Sounds like a host mis-configuration related to kernel bridge support
> to me.
>
Could you tell me what might be mis-configured? I am using kernel 3.10.11,
modules openvswitch, bridge, stp and llc are loaded.
regards
--
Maciej Gałkiewicz
Shelly Cloud Sp. z o. o., Sysadmin
http://shellycloud.com/,
2013 Apr 10
2
Optimization problem
As a simple example, I want to find minimum value for x^2, but it can't be
obtained by:
f<-function(x)x^2
optimize(f,lower=-1,upper=1)
What are other methods to deal with this? I tried DEoptim, still doesn't
work. Any suggustions will be extremely helpful! THanks!
Shelly
--
View this message in context: http://r.789695.n4.nabble.com/Optimization-problem-tp4663821.html
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2013 Oct 16
2
libvirtError: Unable to add bridge br0 port vnet0: Operation not supported
Hi
I am using Libvirt 1.1.2 with Openstack Havana (RC2, nova-network) and
openvswitch 1.4.2+git20120612-9.1. Libvirt vif driver (
nova.virt.libvirt.vif.LibvirtGenericVIFDriver) generates config likes this:
<interface type='bridge'>
<mac address='fa:16:3e:44:30:a4'/>
<source bridge='br0'/>
<model type='virtio'/>
2013 Jul 02
2
Re: nova-compute, libvirt and authentication
On 2 July 2013 09:58, Martin Kletzander <mkletzan@redhat.com> wrote:
> I'd say this is a problem with sasl, nothing else. "No mechanism found"
> may mean that libraries for configured mechanism aren't found or unknown
> mechanism is being requested. I doubt that access to those libraries
> would be a permisison problem, but you might be missing some
>
2006 Nov 02
1
Prediction intervals for predict.gls
I am using R 2.3.0, Is there a way to get prediction intervals using
predict.gls?
Any ideas would be appreciated.
thanks,
Spencer
On 11/2/06, Frank McCown <fmccown@cs.odu.edu> wrote:
>
> I was wondering if anyone knows who should be contacted to add to the R
> user-contributed documentation at
>
> http://www.r-project.org/other-docs.html
>
> There doesn't
2011 Dec 13
1
Should I use nls for this?
Hi,
I have a dataset with the following properties:
Y_i ~ N(mu_i, theta * (mu_i)^2)
ln(mu_i) = B'Xi
theta and beta's are the parameters here.
I want to come up with a model to fit the data with the above property and
test that model on the built in R dataset quine.
Does nls() make sense in this case? Or is there any existing R package which
can fit this model?
-Shelly
--
View
2008 Apr 08
1
lme and confidence intervals
Hi all!
After fitting a mixed effects model to repeated measurements data set, and after several unsuccessful atempts to make a simple plot of the confidence interval for the fitted model, I gave up and now I am asking for help in this useful list.
Could anyone be so kind to give me some code lines in order to make a plot of the fitted equation and the correspondent confidence interval?
2007 Dec 04
2
confidence intervals for y predicted in non linear regression
Hi, I´m trying to plot a nonlinear regresion with the confidence bands for
the curve obtained, similar to what nlintool or nlpredci functions in Matlab
does, but I no figure how to. In nls the option is there but not implemented
yet.
Is there a plan to implement the in a relative near future?
Thanks in advance, Florencio
La información contenida en este e-mail y sus ficheros adjuntos es
2005 May 04
1
Plotting means and confidence intervals by group factor using lattice graphics?
Dear R graphics gurus,
Another question about lattice graphics. This time I would like to plot
means and confidence intervals by group factor in a lattice graph. I can
not find any working lattice examples. Maybe a custom panel function is
the answer, but that is a bit beyond me for now.
The individual plots within the lattice graph could look like this:
# Example with confidence intervals
2013 Jul 01
3
nova-compute, libvirt and authentication
Hello
I have a question about live migration when libvirt requires sasl
authentication. I have managed to configure remote access for user nova
with sasl enabled (credentials stored in auth.conf -
https://review.openstack.org/#/c/12706/). It looks like live migration do
not use these credentials at all. What is more it thinks that sasl is not
not configured:
2013-07-01 09:49:09.317+0000: 17997:
2003 Aug 14
0
Bug in numericDeriv (was: [R] nls confidence intervals) (PR#3746)
Moved from r-help:
On Thu, 14 Aug 2003 09:08:26 -0700, Spencer Graves
<spencer.graves@pdf.com> wrote :
>p.s. The following command in S-Plus 6.1 seems to work fine but
>produces an error in R 1.7.1:
>
>nls(y~a, data=tstDf, start=list(a=1))
>Error in nlsModel(formula, mf, start) : singular gradient matrix at
>initial parameter estimates
This looks like a bug in
2010 Feb 15
2
Confidence intervals nls
Dear All
I am quite new to R and would appreciate some help fitting 95% confidence
intervals to a nls function. I have the data
DOY CET
90 5.9
91 8
92 8.4
93 7.7
95 6.6
96 6.8
97 7.1
98 9.7
99 12.3
100 12.8
102 11
103 9.3
104 9.8
105 9.9
107 7.7
110 6.2
111 5.9
112 5.9
113 3.4
114 3.5
116 3.3
117 5.4
118 6.3
119 9.7
120 11.2
121 7.3
124 7.8
etc
I am trying to use some code that has been
2008 Aug 01
1
Confidence intervals with nls()
I have data that looks like
O.lengthO.age
176 1
179 1
182 1
...
493 5
494 5
514 5
606 5
462 6
491 6
537 6
553 6
432 7
522 7
625 8
661 8
687 10
704 10
615 12
(truncated)
with a simple VonB growth model from within nls():
plot(O.length~O.age, data=OS)
Oto = nls(O.length~Linf*(1-exp(-k*(O.age-t0))), data=OS,
start=list(Linf=1000, k=0.1, t0=0.1), trace=TRUE)
mod <- seq(0, 12)
2007 Aug 23
0
weighted nls and confidence intervals
for unweighted fits using `nls' I compute confidence intervals for the
fitted model function by using:
#-------------------
se.fit <- sqrt(apply(rr$m$gradient(), 1, function(x) sum(vcov(rr)*outer(x,x))))
luconf <- yfit + outer(se.fit, qnorm(c(probex, 1 - probex)))
#-------------------
where `rr' contains an `nls' object, `x' is the independent variable vector,
`yfit'
2003 Aug 14
2
nls confidence intervals
Hi,
Does anyone know how to compute the confidence prediction intervals for
a nonlinear least squares models (nls)?
I was trying to use the function 'predict' as I usually do for other
models fitting (glm, lm, gams...), but it seems that se.fit, and
interval computation is not implemented for the nls...
Cheers
Enrique
~~~~~~~~~~~~~~~~~~~~~~~~~~~
Fisheries Research Services,
Marine
2012 May 16
2
confidence intervals for nls or nls2 model
Hi all
I have fitted a model usinf nls function to these data:
> x
[1] 1 0 0 4 3 5 12 10 12 100 100 100
> y
[1] 1.281055090 1.563609934 0.001570796 2.291579783 0.841891853
[6] 6.553951324 14.243274230 14.519899320 15.066473610 21.728809880
[11] 18.553054450 23.722637370
The model fitted is:
modellogis<-nls(y~SSlogis(x,a,b,c))
It runs OK. Then I calculate