Displaying 20 results from an estimated 100 matches similar to: "Fitting a choice model (Bradley-Terry generalization)"
2007 Nov 12
0
How can Bradley Terry package for log-linear model be applied since design matrix is properly build
Dear readers I have made the design matrix properly but how further model
parameters estimation should be done? which package should I use?
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2003 May 28
1
Bradley Terry model and glmmPQL
Dear R-ers,
I am having trouble understanding why I am getting an error using glmmPQL (library MASS).
I am getting the following error:
iteration 1
Error in MEEM(object, conLin, control$niterEM) :
Singularity in backsolve at level 0, block 1
The long story:
I have data from an experiment on pairwise comparisons between 3 treatments (a, b, c). So a typical run of an experiment
2009 Sep 09
0
new package MLCM: Maximum Likelihood Conjoint Measurement
This is to announce a new package MLCM on CRAN.
The package provides functions for estimating perceptual scales
by maximum likelihood from data collected in a conjoint measurement
experiment. Data for conjoint measurement are typically collected
using a psychophysical procedure. The stimuli vary along 2 or more
dimensions. The observer views pairs of stimuli and judges which
stimulus of each pair
2009 Sep 09
0
new package MLCM: Maximum Likelihood Conjoint Measurement
This is to announce a new package MLCM on CRAN.
The package provides functions for estimating perceptual scales
by maximum likelihood from data collected in a conjoint measurement
experiment. Data for conjoint measurement are typically collected
using a psychophysical procedure. The stimuli vary along 2 or more
dimensions. The observer views pairs of stimuli and judges which
stimulus of each pair
2002 Apr 04
0
Basle/ Allerød: Survival Analysis in S-PLUS with Terry Therneau
SURVIVAL ANALYSIS IN S-PLUS
by Dr Terry Therneau
14/15 May Aller?d, Denmark
16/17 May Basel, Switzerland
Dr. Terry Therneau has worked in medical research statistics for
over 15 years. He has written several papers on the use of residuals
in the Cox model, and is the author of the survival routines found in
S-PLUS, as well as the SAS routines COXREG and SURVTEST.
Note: Due to his
2009 Aug 24
6
CRAN (and crantastic) updates this week
CRAN (and crantastic) updates this week
New packages
------------
Updated packages
----------------
New reviews
-----------
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Like it? Hate it? Please let us know: cranatic at gmail.com.
2004 Aug 11
0
New package: eba
I have recently uploaded a new package to CRAN called eba,
which stands for elimination-by-aspects models.
It allows for fitting and testing probabilistic choice models,
especially the BTL model (Bradley & Terry, 1952; Luce, 1959),
elimination-by-aspects (EBA) models (Tversky, 1972), and
preference tree (Pretree) models (Tversky & Sattath, 1979).
I believe that the functions in this
2004 Aug 11
0
New package: eba
I have recently uploaded a new package to CRAN called eba,
which stands for elimination-by-aspects models.
It allows for fitting and testing probabilistic choice models,
especially the BTL model (Bradley & Terry, 1952; Luce, 1959),
elimination-by-aspects (EBA) models (Tversky, 1972), and
preference tree (Pretree) models (Tversky & Sattath, 1979).
I believe that the functions in this
2005 May 05
0
updated package eba 1.4-0
Dear all,
There is an updated version of the eba package for
elimination-by-aspects (EBA) choice models available on CRAN.
It features new functions for extracting and plotting
the residuals, for testing hypotheses on the parameters
(wald.test), and for comparing sub-samples (group.test).
The documentation has also been updated.
Any feedback is welcome.
Happy modeling!
Florian Wickelmaier
2005 May 05
0
updated package eba 1.4-0
Dear all,
There is an updated version of the eba package for
elimination-by-aspects (EBA) choice models available on CRAN.
It features new functions for extracting and plotting
the residuals, for testing hypotheses on the parameters
(wald.test), and for comparing sub-samples (group.test).
The documentation has also been updated.
Any feedback is welcome.
Happy modeling!
Florian Wickelmaier
2002 Nov 03
1
Ansari-Bradley test (PR#2252)
Full_Name: Wei Xu
Version: 1.5.1
OS: WindowsME
Submission from: (NULL) (63.215.238.92)
The P-value for a two.sided test is not consistent with the confidence
interval.
For example, P-value=0.1372, but the 95% CI doesn't include the H0 value(1).
> x
[1] 0.80 0.83 1.89 1.04 1.45 1.38 1.91 1.64 0.73 1.46
> y
[1] 1.15 0.88 0.90 0.74 1.21
>
2004 Sep 14
2
Use ISP's SIP account for IP-PSTN gateway
Hi,
I'm thinking of introducing Asterisk on Linux for IP PBX.
Now I'm using ISP that has VoIP service and I have VoIP terminal box for
that ISP and a SIP account for SIP server of the ISP.
Now, what I would like to do is the following.
A. Setup IP PBX on Linux by using Asterisk.
B. For IP-PSTN gateway, configure Asterisk to use my ISP's SIP account and
connect to my ISP's IP
2004 Oct 06
2
jabber clients
Hi,
I'm a beginner of voip and just wondering the possibilities of *.
Is that possible for * to handle jabber based voice chat IMs, possibly inter-connecting them to different kind of clients -say, H.323 clients- in meetme conference function?
If I use SER together with *, is that possible?
--
Kuniyoshi Murata.........................iChat/AIM:macwebcaster
English-Japanese Interpreter
2004 Nov 21
1
SER is a better NAT solution?
Hi,
I'm now setting up a VoIP conference room using Asterisk.
All the clients are SIP phone (to be exact, Xlite), number of clients that should be registered are around 50 and concurrent users are maybe 15 clients at most.
So, basically I think I can handle the situation only with Asterisk.
I'm wondering however, most of my clients are behind NAT of home router and using SER together
2005 Aug 26
2
Asterisk 1.2.0-beta1 Released
The first beta of Asterisk 1.2.0 has been released! It is available from
the ftp.digium.com FTP servers, as well as the Digium CVS servers (under
the 'v1-2-0-beta1' tag).
This version of Asterisk represents a significant improvement in
features, stability and compatibility over the 1.0.x releases. Some of
the major new (or upgraded) features include:
* Asterisk Realtime Architecture
2005 Oct 12
2
Modifying cmd VoicemailMain
Dear Asterisk Users,
I'm a Japanese and now configuring Voicemail.
Now I need to modify the way cmd VoicemailMain works to fix language
difference and other my conveniences.
What I want to do are...
1) Add words used in message retrieving guidance.
I need to add different suffixes to numeric words due to Japanese way of
mentioning time. (e.g. in English, you can say "Five
2005 Jan 28
6
iaxComm version 1.0 released
iaxComm is an Open Source softphone for the Asterisk PBX.
iaxComm compiles and runs on Win32, Linux and Mac OS X (Panther) systems.
Recent Changes:
* Improved jitterbuffer code
* Steve Underwood's Packet Loss Concealment Code
Features Include:
* iLBC support
* GSM support
* speex support
* ulaw and alaw support
* Blind Transfer.
* Custom Ringtones per
2008 Mar 07
2
error in random forest
Hi,
I get the following error when I try to predict the probabilities of a
test sample:
Error in predict.randomForest(fit.EBA.OM.rf.50, x.OM, type = "prob") :
New factor levels not present in the training data
I have about 630 predictor variables in the dataset x.OM (25 factor
variables and the remaining are continuous variables). Any ideas on
how to trace it?
Thank you,
Nagu
2017 Jan 04
1
Re: libvirtError: block copy still active: disk not ready for pivot yet
I understand that libvirt provides async events that are triggered once the
block job reaches ready state and successfully pivots as it is reported by
qemu.
Whats the event that is triggered and what's the handler that we have to
implement?
To be more specific, I am looking for the onEVENT callback method that is
invoked when the event is fired.
On Tue, Jan 3, 2017 at 6:28 PM, Kashyap
2004 Sep 28
1
binding to two IPs among five
Hi,
I'm going to setup Asterisk on my server which have 5 IPs (3 global and 2 local). Now I want to bind Asterisk to 2 IPs (1 blobal and 1 local)
Is this possible on config?
--
Kuniyoshi Murata.........................iChat/AIM:macwebcaster
English-Japanese Interpreter mailto:kuni@ej-interpreter.net
Macintosh Webcast Specialist http://www.macwebcaster.com