similar to: AID and CHAID: news about?

I have a large dataset (questionnaire results) of mostly categorical variables. I have tested for dependency between the variables using chi-square test. There are an incomprehensible number of dependencies. I used the chaid() function in the CHAID package to detect interactions and separate out (what I hope to be) the underlying structure of these dependencies for each variable. What typically

Hi..I am trying to run CHAID in R..I have installed the sofyware Party and trying to use the function ctree() to carry out the analysis. but I am getting the following message Error in terms.default(formula, data = data) : no terms component . I am having some Likert scale variable where I have variables like "Overall satisfaction"(Dependent Variable),"Product quality", Brand

Dears, anyone has experiences with text mining and R? I'll be very greatfull for tutorial or examples. Thanks -- Daniele Medri - http://www.medri.org

Quick disclaimer: I'm new to the list and I'm not sure if I'm sending this to the correct forum. If there is a better place for questions like these, please let me know! Dear R List, I'm interested in modifying a regression tree algorithm to use the difference between a control and a dosed sample as its dependent variable. I was wondering if anyone knew where I could find

Can I say that RPART is a modified algo of CART and PARTY a modified of CHAID? Thanks. ---- Chua Siang Li Consultant - Operations Research Acceval Pte Ltd Tel: 6297 8740 Email: siang.li.chua at acceval-intl.com Website: www.acceval-intl.com This message and any attachments (the "message"...{{dropped:12}}

Dear Colleagues, I've been looking for a function that can perform a tree analysis, similar to CHAID or QUEST. The key point is that in this case the variables are not binary but nominal (10 different values), so "tree" (from the tree package) won't work. Does anybody know help? Sincerely, ___________________ Markus Preisetanz Consultant Client Vela GmbH

DeaRs, I have a doubt about: BIC (Bayesian Information Criterion) SBIC (Schwartz Bayesian Informarion Criterion) SIC (Schwartz Information Criterion) In many references these are know as the same (eg. stepAIC() function) but I just found a SAS8.2 output that show either the BIC and SIC values for a logistic regression.. simillary values but different. 1) question: What are the differences?

Dear R.Users, using ctree() (from "party" library) on a data.frame, I want to append a column with the references for the groups/segments detected. While these nodes are easy readable in output, I need a vector for my obs. Hints? Cheers -- Daniele Medri

Hi all, I need to create a data.frame from a variable number of vectors. The number of these vectors could change so I need a dinamic way to group all in a data.frame. The number is length(abc). e.g. vectors in my workspace N1 <-c(1,2,3,4) N2 <-c(1,2,3,4) N3 <-c(1,2,3,4) abc <-c(1,2,3) the data.frame I want to create: tcm <-data.frame(OneVector, TwoVector,

Could you please let me know how to run chaid in R.     Thanks, Saumyha [[alternative HTML version deleted]]

Quer?a saber si existe alguna funci?n de R para realizar el algoritmo CHAID de ?rbol de clasificaci?n, existen de J48 por ejemplo pero no encuentro nada de este algor?tmo. Muchas gracias y un cordial saludo, Juan -- ========================================================= Juan Antonio Gil Pascual Prof. Titular de M?todos de Investigaci?n en Educaci?n correo: jgil at edu.uned.es web:

Hi., I would like to conduct a CHAID tree analysis - Chi-square Automatic Interaction Detector. >From what I can make out from MASS, tree, rpart, and a quick search it isn't available as a package. Is that correct or have I missed it? Has anyone an available implementation of it? Thanks Stephen Nana Mail <http://mail.nana.co.il> - Get Your Free Personal Outlook 2003 Now

Michael thank you very much, what about the options I have tried all without success. Try again to send a message to the list by changing the subject line. Merry Christmas Juan -- ========================================================= Juan Antonio Gil Pascual Prof. Titular de M?todos de Investigaci?n en Educaci?n correo: jgil en edu.uned.es web: www.uned.es/personal/jgil U.N.E.D. Fac. de

Dears, I am selecting configure-options for Data Mining applications with R, notes that guide a user from SVN repository to system compilation on GNU/Linux system ("gcc" as compiler). Status: * My system specs: - processor Intel 2.8Ghz HT - kernel Linux 2.6.10-5-686-smp - ram 1500 Mbyte * Dataset to use: - ~900 Mbyte of text file * R from svn repository (daily updated) *

Hi Manuel, find our SoC proposal below. Best wishes, Torsten & Achim _______________________________________________________________________ Party On! New Recursive Partytioning Tools. Mentor: Torsten Hothorn & Achim Zeileis Short Description: The aim of the project is the implementation of recursive partitioning methods ("trees") which aren't available in R at the

I don't know if this is the right forum, but I'd like to ask an open-ended question about the goals of the S7 OOP system, which is, where do we see the ultimate future of object-oriented programming in R being? Do we see S7 eventually complementing S3 and S4 in "base" (in quotes because S4 is provided by the methods package), or do we see (or even wish?) for S7 to supplant both

Hi all. First, a note about remote database connection over Perl. We actually found an easy way to work around the unwrapped Renote::open issue.. We use a stub file. You might say that open_stub in also not wrapped.. which is true... HOWEVER... looking at the code, we realized that Database::open() opts to using stub_open if the argument is a string pointing to a stub file rather than a

Hello, I am very new in R so I am so sorry for this question. I have the Barro-Lee data set which contains 98 countries and I want to run the regressions only for the Latin America countries, so what do you recomend? How can I delete all the other countries or how can I select the countries of Lat. Am. thank you this is the list of countries SHCODE COUNTRY NAME WBCTRY

In several of the recent ZFS posts, multiple people have asked when this will be MFC'd to 7.x. This query has been studiously ignored as other chatter about whatever ZFS issue is discussed. So in a post with no other bug report or discussion content to distract us, when is it intended that ZFS be MFC'd to 7.x?

Dear all, I am new to R and statistics really in general. I am hoping that someone will be able to point me in the right direction and/or suggest a technique/package/reference that will help me with the following. I have: Some input variables (integers, real) Some output variables (integers, real) and I want to find out which between the two correlate best - i.e. the salient features. I