Displaying 20 results from an estimated 9000 matches similar to: "glm vs lm"
2000 Jun 21
3
SAS dataset
Hello,
Is there any way we convert SAS dataset into R dataset?
Kindest Regards,
Peppy Adi-Purnomo
------
Peppy Adi-Purnomo
Energy Market Analyst
Energy Link Ltd
Dunedin - New Zealand
Ph.: +64 3 479 2475
Fax: +64 3 477 8424
Email: s.adi.purnomo at energylink.co.nz
www.EnergyLink.co.nz
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2001 Jun 11
2
Generalized Additive Model
Hello,
I am wondering if someone can direct me to the syntax of the Generalised
Additive Model in R? In Splus this is gam(formula, ... inputs would be
pretty much the same as glm I suspect..)
Any response on that (or what package should I grap) would be appreciated
very much.
Thanks,
Peppy Adi-Purnomo
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r-help
1999 Aug 31
1
Vector-isation
Hi,
Suppose I have a by b matrix which a and b are big numbers. How can I
convert this matrix into a vector with length of a*b ? By column-wise or
row-wise doesnt matter. My R version is 0.64.2.
Kindest Regards,
Peppy Adi-Purnomo
-------
Stephanus (Peppy) Adi-Purnomo
Energy Market Analyst - Energy Link Ltd - Dunedin
email: s.adi.purnomo at energylink.co.nz
http://www.energylink.co.nz
2000 Sep 22
6
lme
Hello,
I need to use a procedure in R that similar to lme in Splus.. is this
particular procedure has been implemented in the recent version? thanks.
Regards,
Peppy Adi-Purnomo
Energy Market Analyst
Energy Link Ltd
Telp.: +64 3 479 2475
Fax. : +64 3 477 8463
www.energylink.co.nz
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1999 Oct 14
1
Regression on non linear model
Dear Help desk,
I have a model that I believe to be non linear. The relationship is
something like:
Response = Var1 + Var1^2 + Var1^3
Can I examine this relationship using glm or lm? However, glm or lm gives
out pnly 1 coeficient for the model which is on Var1, unless I created some
dummy var like (Var2 = Var1^2 and Var3 = Var1^3).
Is there any other function handling this relationship?
1999 Oct 14
1
Regression on non linear model
Dear Help desk,
I have a model that I believe to be non linear. The relationship is
something like:
Response = Var1 + Var1^2 + Var1^3
Can I examine this relationship using glm or lm? However, glm or lm gives
out pnly 1 coeficient for the model which is on Var1, unless I created some
dummy var like (Var2 = Var1^2 and Var3 = Var1^3).
Is there any other function handling this relationship?
2000 Aug 16
3
virus - free
Hello,
I am wanting to download the recent R update off the web. May I assume
confidently that R package from the website is virus free? I apologise if
this is a very silly question, I just need to convince myself if the site is
very hygiene.
Thank you very much,
Peppy
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1999 Aug 18
1
R 0.64.2 indexing
Hi,
> Say we have a large-sized vector of observation A and a time vector with
> the same size. The latter vector basically is the time flag when ith
> obervation of A occurs, hence A[i] occurs at T[i].
>
> I have no trouble with doing: T[A <= 10 | A >=20] for example
>
> Now, what I am confused: I tried to pull out when the largest value of A
> with:
>
>
2000 Aug 10
1
anova
hello,
I have a very old R version which calculates anova table for a stream of
outcomes say: 1,5,4,3,2,4,5,2 which are grouped into 4 blocks, say A,B,C,D,
of 2 say namely X,Y
What is the command in R 0.64.2 to do this? My very old R command is
anova.table but this command is unkown in R 0.64.2
Thanks,
Peppy
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r-help
2000 Sep 11
1
New update
Hello,
I want to update my new R version. Now something has change is that I am
now in Windows 2000. Which one should I use whether the R for window 9x or
Win NT?
Thanks a lot,
Peppy
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2001 Apr 28
1
Rprofile
Hello again,
If I want to have a set of add-ons functions (say: nlme and tseries) loaded
to R everytime I run R, do I put command:
library(nlme)
library(tseries)
in the rw1021/etc/Rprofile file?
thanks,
Peppy
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1999 Aug 11
1
acf()
Hi there,
I have R 0.64.2. I wonder if this R has acf function to calculate
autocorrelation? since the help(acf) doesnt seem to be able to help me.
thanks,
Peppy
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2017 May 12
1
CentOS 7 speedstep CPU support
On Fri, May 12, 2017 at 8:18 AM, ken <gebser at mousecar.com> wrote:
> Currently I don't actually need more speed. This is already a fairly peppy
> laptop... like right now the load is about 2%. If it was any lower, I could
> almost turn this machine off and still run everything. :) Ah but
> seriously, I'd rather have the speed cranked down and save the battery.
>
2006 Sep 22
2
"logistic" + "neg binomial" + ...
Hi Folks,
I've just come across a kind of problem which leads
me to wonder how to approach it in R.
Basically, each a set of items is subjected to a series
of "impacts" until it eventually "fails". The "force"
of each impact would depend on covariates X,Y say;
but as a result of preceding impacts an item would be
expected to have a "cumulative
2012 Mar 29
1
Data handling/optimum glm method.
Hi there,
I am trying to fit a generalised linear model to some loan application and default data. The purpose of this is to eventually work out the probability an applicant will default.
However, R seems to crash or die when I run "glm" on anything greater than a 5-way saturated model for my data.
My first question: is the best way to fit a generalised linear model in R to fit the
2003 Feb 19
2
GLM for Beta distribution
Hi R-help,
Is there such a thing as a function in R for fitting a GLM where the
response is distributed as a Beta distribution?
In my case, the response variable is a percentage ([0,1] and continuous).
The current glm() function in R doesn't include the Beta distribution.
Thank you for any help on this topic.
Sincerely,
Sharon K?hlmann
2000 Mar 23
3
Tukey multiple comparisons
I am embarrassed to have to ask this but can anyone tell me of a Tukey
multiple comparisons procedure available for R? I have looked through
the search page, through the FAQ, and in the index of V&R (1999), and
I still can't find such a thing. I see there is a ptukey function and
a qtukey function but that is as far as I got. Do I need to roll my
own?
--
Douglas Bates
2002 May 16
1
glm(y ~ -1 + c, "binomial") question
This is a question about removing the intercept in a binomial
glm() model with categorical predictors. V&R (3rd Ed. Ch7) and
Chambers & Hastie (1993) were very helpful but I wasn't sure I
got all the answers.
In a simplistic example suppose I want to explore how disability
(3 levels, profound, severe, and mild) affects the dichotomized
outcome. The glm1 model (see below) is
2002 Oct 31
3
Loess with glm ?
Hello,
I am wondering if there is an easy way to combine loess() with glm()
to produce a locally fitted generalised regression.
I have a data set of about 5,000 observations and 5 explanatory variables,
with a binary outcome. One of the explanatory variables (lets call it X)
is much more predictive than the others. A single glm() regression over
the entire data set produces rather poor results,
2004 Feb 02
1
glm.poisson.disp versus glm.nb
Dear list,
This is a question about overdispersion and the ML estimates of the
parameters returned by the glm.poisson.disp (L. Scrucca) and glm.nb
(Venables and Ripley) functions. Both appear to assume a negative binomial
distribution for the response variable.
Paul and Banerjee (1998) developed C(alpha) tests for "interaction and main
effects, in an unbalanced two-way layout of counts