similar to: [SoC09-Idea] Party On!

New package `partykit': A Toolkit for Recursive Partytioning The purpose of the package is to provide a toolkit with infrastructure for representing, summarizing, and visualizing tree-structured regression and classification models. Thus, the focus is not on _inferring_ such a tree structure from data but to _represent_ a given tree so that printing/plotting and computing predictions can be

New package `partykit': A Toolkit for Recursive Partytioning The purpose of the package is to provide a toolkit with infrastructure for representing, summarizing, and visualizing tree-structured regression and classification models. Thus, the focus is not on _inferring_ such a tree structure from data but to _represent_ a given tree so that printing/plotting and computing predictions can be

Hi All, I'm a newcomer to the R community, just started learning R. I need to use partykit for developing CART. But I'm not getting any document/help for using partykit/rpart. http://www.agrocampus-ouest.fr/math/useR-2009/slides/Hothorn+Zeileis.pdfgives some example, but it doesn't tell how my own data should be formatted so that it can be accepted by partykit. Example,

Hi everybody, as Fritz mentioned in his introducing "Google Summer of Code 2009" email, I will manage the organizational part of the R-Project application and (hopfully) participation. Google's timeline schedules March 9-13 as date for organizations to make an application as mentoring organization. The idea is now to collect as many project ideas in a brainstorming phase and submit

Hi all, Here's my idea for the google summer of code - it's a resubmission from last year. We had a couple of interested students, but their proposals weren't quite competitive enough to get funding. Regards, Hadley Summary: Create an information portal for the fast growing list of R packages, integrating package documentation and journal publications with feedback from the useR

Hi everybody, just another Google Summer of Code project idea. Best, Manuel. ---------------------------------------------------------------------- cranlab -- "You can't control what you can't measure" [0] Mentor: Manuel J. A. Eugster Summary: The aim of this project is the (1) implementation of software metrics to analyze R packages and (2) the creation of a CRAN

Hi all, here's a proposal for a SoC project on wildlife movement patterns analysis. A MSc student is available to anwser the call, of course. The idea has already been briefly discussed with the mantainer of the adehabitat package and the AniMov project community. Short description Develop some add-on functions to use the adehabitat package to perform basic movement ecology analysis, in

Hola, ¿cómo están? Soy estudiante de Ing. en Sistemas de Información y estoy cursando la materia Tecnologías para la Explotación de Datos. Me he decidido a usar R para hacer DM. Estoy recién comenzando con ambos. El asunto es que no he encontrado la implementación en R de uno de los algoritmos que dimos para árboles de decisión, ID3. Ya revisé varios de los paquetes para DM

The package mvpart is now available. mvpart includes partitioning based on (1) multivariate numeric responses and (2) dissimilarity matrices. The package mvpart is a modification of rpart -- -- authors of original: Terry M Therneau and Beth Atkinson <atkinson at mayo.edu>, and R port of rpart Brian Ripley <ripley at stats.ox.ac.uk>. Includes some modified routines from vegan --

The package mvpart is now available. mvpart includes partitioning based on (1) multivariate numeric responses and (2) dissimilarity matrices. The package mvpart is a modification of rpart -- -- authors of original: Terry M Therneau and Beth Atkinson <atkinson at mayo.edu>, and R port of rpart Brian Ripley <ripley at stats.ox.ac.uk>. Includes some modified routines from vegan --

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

There have been several messages on R-devel mentioning the interior point optimization software Ipopt, https://projects.coin-op/Ipopt/. This C++ library is released under a license called the Common Public License. I have two questions that readers of R-devel may be able to answer. 1) Would creating an Ipopt interface for R be duplicating existing efforts? That is, has someone already done so

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

CentOS Errata and Security Advisory 2008:0583 https://rhn.redhat.com/errata/RHSA-2008-0583.html The following updated files have been uploaded and are currently syncing to the mirrors: s390: updates/s390/RPMS/compat-openldap-2.1.30-8.c4.5.s390.rpm updates/s390/RPMS/openldap-2.2.13-8.c4.5.s390.rpm updates/s390/RPMS/openldap-clients-2.2.13-8.c4.5.s390.rpm

Dear All, I would like to ask clarifications on the gower distnce matrix calculated by the function gdistin the library mvpart. Here is a dummy example: > library(mvpart) Loading required package: survival Loading required package: splines mvpart package loaded: extends rpart to include multivariate and distance-based partitioning > x=matrix(1:6, byrow=T, ncol=2) > x [,1]

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CentOS Errata and Security Advisory 2008:0288 https://rhn.redhat.com/errata/RHSA-2008-0288.html The following updated files have been uploaded and are currently syncing to the mirrors: s390: updates/s390/RPMS/samba-3.0.25b-1.c4.5.s390.rpm updates/s390/RPMS/samba-client-3.0.25b-1.c4.5.s390.rpm updates/s390/RPMS/samba-common-3.0.25b-1.c4.5.s390.rpm

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

I have a question relating to mvpart, which I hope you can answer. We recently conducted a study using TBR. In our first study, we used "regular" TBR in SPSS to model 1 dependent variable. Note we have a relatively small data-set of 100 cases. In SPSS, we used a minimum change of improvement smaller than 0.000001 as a stopping rule. Also, we chose the 1SE "rule", set the

CentOS Errata and Security Advisory 2009:0161 https://rhn.redhat.com/errata/RHSA-2008-0161.html The following updated files have been uploaded and are currently syncing to the mirrors: s390: updates/s390/RPMS/cups-1.1.22-0.rc1.9.20.2.c4.5.s390.rpm updates/s390/RPMS/cups-devel-1.1.22-0.rc1.9.20.2.c4.5.s390.rpm updates/s390/RPMS/cups-libs-1.1.22-0.rc1.9.20.2.c4.5.s390.rpm s390x: