Displaying 20 results from an estimated 3000 matches similar to: "logistic regression: wls and unbalanced samples"
2015 Sep 25
2
Asterisk => Mediant 1000 (AudioCodes) => PSTN (E1)
Does anyone have any information for me?
Welinghton.
Citando Welinghton Magno Guimaraes <welinghton.guimaraes at ufvjm.edu.br>:
> Hello!
> ?
> I am setting up an Asterisk server with a Mediant 1000 (Audiocodes)
> to make external links. Does anyone have any manual or instructions on
> how to proceed?
> ?
> Asterisk ?=>? Mediant 1000 (AudioCodes) ?=>?
2006 Jul 19
1
WLS ins systemfit question
How does one specify the weights for WLS in the
systemfit command ?
That is, there is a weight option in lm(), but there
doesn't seem to be weight option for systemfit("WLS")
Thanks!
2011 Jul 14
1
WLS regression, lm() with weights as a matrix
Dear All,
I've been trying to run a Weighted Least Squares (WLS) regression:
Dependent variables: a 60*200 matrix (*Rit*) with 200 companies and 60 dates
for each company
Independent variables: a 60*4 matrix (*Ft*) with 4 factors and 60 dates for
each factor
Weights: a 60*200 matrix (*Wit*) with weights for 200 companies and 60 dates
for each company
The WLS regression I would like to run
2012 Nov 29
2
Confidence intervals for estimates of all independent variables in WLS regression
I would like to obtain Confidence Intervals for the estimates
(unstandardized beta weights) of each predictor in a WLS regression:
m1 = lm(x~ x1+x2+x3, weights=W, data=D)
SPSS offers that output by default, and I am not able to find a way to do
this in R. I read through predict.lm, but I do not find a way to get the
CIs for multiple independent variables.
Thank you
Torvon
[[alternative HTML
2006 Jul 13
1
ols/gls or systemfit (OLS, WLS, SUR) give identical results
I might be sorry for asking this question :-)
I have two equations and I tried to estimate them individually with "lm" and "gls", and then in a system (using systemfit) with "OLS", "WLS" and "SUR". Quite surprisingly (for myself at least) the results are identical to the last digit.
Could someone (please!) give a hint as to what am I
2010 Jun 24
1
Question on WLS (gls vs lm)
Hi all,
I understand that gls() uses generalized least squares, but I thought
that maybe optimum weights from gls might be used as weights in lm (as
shown below), but apparently this is not the case. See:
library(nlme)
f1 <- gls(Petal.Width ~ Species / Petal.Length, data = iris, weights
= varIdent(form = ~ 1 | Species))
aa <- attributes(summary(f1)$modelStruct$varStruct)$weights
f2 <-
2012 Oct 13
1
WLS regression weights
Hello.
I'm am trying to follow a recommendation to deal with a dependent variable
in a linear regression.
I read that, due to the positive trend in my dependent variable residual vs
mean function, I should
1) run a linear regression to estimate the standard deviations from this
trend, and
2) run a second linear regression and use 1 / variance as weight.
These might be terribly stupid
2012 Nov 16
2
R-Square in WLS
Hi,
I am fitting a weighted least square regression and trying to compute
SSE,SST and SSReg but I am not getting SST = SSReg + SSE and I dont know
what I am coding wrong. Can you help please?
xnam <-colnames(X) # colnames Design Matrix
fmla1 <- as.formula(paste("Y ~",paste(xnam, collapse=
2004 Sep 14
0
RV: SAMBA & ISAM Databases
You were correct. The problem was with smbfs.
But now I have aproblem I didn`t have before: if a file is open by the
application in Linux I can not create new records thru the application
in Win. I can modify existing records but I can not create new records.
Any ideas
Jos? Guimar?es [ pg@moose-software.com ]
Director
Moose Software
http://www.moose-software.com
-----Mensaje original-----
2008 Oct 16
4
How to save/load RWeka models into/from a file?
Hi,
I want to save a RWeka model into a file, in order to retrive it latter
with a load function.
See this example:
library(RWeka)
NB <- make_Weka_classifier("weka/classifiers/bayes/NaiveBayes")
model<-NB(formula,data=data,...) # does not run but you get the idea
save(model,file="model.dat") # simple save R command
# ...
load("model.dat") # load the model
2004 Dec 07
3
Question about e1/digium
Hi all I am beginning in asterisk and am making tests with an ata-186.
For the time being the tests are going well, however have a doubt.
I am thinking about using a canal e1 with plate digium.
Assuming that the company of telecommunications supplies e1 with 30 canals
and numeration to me 4000-0001 4000-0029. she is possible to configure
asterisk
in way that somebody of is dials 4000-0025, to
2018 Mar 27
1
Debian 9 + Samba 4.5 + Winbind 4.5 = Can't authenticate user for shared folder
I joined my Debian 9 server into a Active Directory Structure as a domain member. Not as a DC. Then when I try to share a folder on this server and the client PC can't correctly authenticate and use the folder. It keeps saying "Access Denied" on Windows client PC. There is no error in log files (/var/log/samba/). If I allow anonymous users, it works fine. I used to use the same
2005 Sep 28
0
RES: RES: RES: RES: Re: ACLs with Problem
I have an environment to make test. I go to try to mount a partition xfs in this server of test. I thank its help.
-----Mensagem original-----
De: Paul K?lle [mailto:pkoelle@gmail.com]
Enviada em: quarta-feira, 28 de setembro de 2005 10:53
Para: Luis Henrique de Faria Guimar?es
Assunto: Re: RES: RES: RES: [Samba] Re: ACLs with Problem
Luis Henrique de Faria Guimar?es wrote:
> I forgive me
2007 Apr 03
2
Coding for contrasts in unbalanced designs
Dear list members,
I want to use a GLM with an unbalanced factor and continuous variables.
My factor F has 12 unbalanced levels:
2011 Jan 08
1
Anova with repeated measures for unbalanced design
Dear all,
I need an help because I am really not able to find over internet a good example
in R to analyze an unbalanced table with Anova with repeated measures.
For unbalanced table I mean that the questions are not answered all by the same
number of subjects.
For a balanced case I would use the command
aov1 = aov(response ~ stimulus*condition + Error(subject/(stimulus*condition)),
data=scrd)
2011 May 21
2
unbalanced anova with subsampling (Type III SS)
Hello R-users,
I am trying to obtain Type III SS for an ANOVA with subsampling. My design
is slightly unbalanced with either 3 or 4 subsamples per replicate.
The basic aov model would be:
fit <- aov(y~x+Error(subsample))
But this gives Type I SS and not Type III.
But, using the drop() option:
drop1(fit, test="F")
I get an error message:
"Error in
2012 Oct 29
2
Two-way Random Effects with unbalanced data
Hi there,
I am looking to fit a two-way random effects model to an *unblalanced*
layout,
y_ijk = mu + a_i + b_j + eps_ijk,
i=1,...,R, j=1,...,C, k=1,...,K_ij.
I am interested first of all in estimates for the variance components,
sigsq_a, sigsq_b and sigsq_error.
In the balanced case, there are simple (MM, MLE) estimates for these; In the
unbalanced setup,
2011 Mar 08
1
lags for unbalanced panel data
Hello, I was wondering if there was an easy way to calculate the rate of
change in a variable for an unbalanced panel data set. Below is a detailed
description in R of what I am asking. Thank you. Geoff
#Suppose I have the following unbalanced panel data;
Person <- c(rep('Frank',5), rep('Tony',4), rep('Edward',4));
Year <-
2012 Aug 14
2
anova in unbalanced data
Hi all,
Say I have the following data:
a<-data.frame(col1=c(rep("a",5),rep("b",7)),col2=runif(12))
a_aov<-aov(a$col2~a$col1)
summary(aov)
Note that there are 5 observations for a and 7 for b, thus is
unbalanced. What would be the correct way of doing anova for this set?
Thanks,
Sachin
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2012 Jun 12
1
Unbalanced Design Power Analysis
I have an unbalanced design I would like to run a power analysis on.
What I have been able to find has pointed me to using the pwr.f2.test
function as described below. My problem is that I don't know how to
appropriately define the numerator and demoninator df.
If someone can help here is some more info about my design.
It is an unbalanced 2^3 x 3 design where the factor with 3 levels is a