[R] Cluster validation
Dear list Is v-fold cross-validation for cluster analysis available in R? If anyone can point me towards the appropriate link I would greatly appreciate it. Graham [[alternative HTML version deleted]] __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] Reshape data
I have two data frames with a number of common variables that I wish to put into long format. The first contains the variables es(Csales) [1] terr Dec.02 Jan.03 Feb.03 Mar.03 Apr.03 May.03 Jun.03 [9] Jul.03 Aug.03 Sep.03 Oct.03 Nov.03 Dec.03 Jan.04 Feb.04 [17] Mar.04 Apr.04 May.04 Jun.04 Jul.04 Aug.04 Sep.04 Oct.04 For this the following code works fine. Csall-reshape(Csales, idvar = terr, timevar = month, varying = list(c(Dec.02,Jan.03,Feb.03,Mar.03, Apr.03,May.03,Jun.03,Jul.03,Aug.03,Sep.03, Oct.03,Nov.03,Dec.03,Jan.04,Feb.04,Mar.04, Apr.04,May.04,Jun.04,Jul.04,Aug.04,Sep.04, Oct.04)),direction = long) The second dataset contains the variables es(Ccalls) [1] TERRITORY REGIONACTIVITY_TYPE [4] CONTACT_TYPE TARGETED_FLG CONTACT_GRADE [7] CONTACT_PR_SPECIALITY UBM DEC02 [10] JAN03 FEB03 MAR03 [13] APR03 MAY03 JUN03 [16] JUL03 AUG03 SEP03 [19] OCT03 NOV03 DEC03 [22] JAN04 FEB04 MAR04 [25] APR04 MAY04 JUN04 [28] JUL04 AUG04 SEP04 [31] OCT04 Trying the following code on this set produces an error Ccall-reshape(Ccalls, idvar = TERRITORY, timevar = MONTH, v.names = list(c(TERRITORY,REGION,ACTIVITY_TYPE,CONTACT_TYPE, TARGETED_FLG,CONTACT_GRADE,CONTACT_PR_SPECIALITY,UBM)), varying = list(c(Dec.02,Jan.03,Feb.03,Mar.03, Apr.03,May.03,Jun.03,Jul.03,Aug.03,Sep.03, Oct.03,Nov.03,Dec.03,Jan.04,Feb.04,Mar.04, Apr.04,May.04,Jun.04,Jul.04,Aug.04,Sep.04, Oct.04)),direction = long) Where am I going wrong here? Any help would be greatly appreciated. Kind regards Dr Graham Leask Economics and Strategy Group Aston Business School Aston University Aston Triangle Birmingham B4 7ET Tel: Direct line 0121 204 3150 email [EMAIL PROTECTED] [[alternative HTML version deleted]] __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] help with cluster stopping rules
Is there a function available in R that implements Mojena's Upper Tail Rule or that draws a Mojena plot? I would also like to find a function that implements Duda and Hart's stopping rule. Finally with function cophenet how can I achieve a straightforward Cophenet correlation coefficient (i.e. one number for example 0.876) that gives the agreement between the structure of the data as interpreted by the clustering method and the original data? If anyone could let me know where I can find a script file for these functions I would greatly appreciate it. Kind regards Dr Graham Leask Economics and Strategy Group Aston Business School Aston University Aston Triangle Birmingham B4 7ET Tel: Direct line 0121 204 3150 email [EMAIL PROTECTED] [[alternative HTML version deleted]] __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] Duda Hart Index
Is the Duda Hart clustering index available within R? If so I would greatly appreciate the script file. Many thanks Kind regards Dr Graham Leask Economics and Strategy Group Aston Business School Aston University Aston Triangle Birmingham B4 7ET Tel: Direct line 0121 204 3150 email [EMAIL PROTECTED] [[alternative HTML version deleted]] __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] V fold cross validation
Does any package available in R contain the V-fold cross-validation method for determining the right number of clusters? Any help greatly appreciated Kind regards Dr Graham Leask Economics and Strategy Group Aston Business School Aston University Aston Triangle Birmingham B4 7ET Tel: Direct line 0121 204 3150 email [EMAIL PROTECTED] [[alternative HTML version deleted]] __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] RE gap statistic in cluster analysis
Has anyone implemented Tibrishani's gap statistic in R or S plus? If so I would greatly appreciate the relevant script file. Any help will be much appreciated Kind regards Dr Graham Leask Economics and Strategy Group Aston Business School Aston University Aston Triangle Birmingham B4 7ET Tel: Direct line 0121 204 3150 email [EMAIL PROTECTED] [[alternative HTML version deleted]] __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] Diebold Mariano Test
Dear List Has anyone used R to distnguish between alternative forecasting models? In particular is the Diebold Mariano test available for use within R. Any assistance would be greatly appreciated. Graham Leask Lecturer in Strategy Economics Strategy Group Aston University Aston Triangle Birmingham B4 7ET Tel: 0121 204 3150 E Mail: [EMAIL PROTECTED] __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] Box's M test
Dear List I am looking for a script that will calculate the Box M test to test the homogeneity of the variance/covariance matrix between two matrices. If anyone could send me the script I would appreciate it. I am aware of the scepticism about this test, where due to extreme sensitivity a p value of 0.01 is recommended. Despite this however Box's M test is the established method for identification of stable strategic time periods within the strategic management literature and I would like the opportunity to use this method within either R or S plus. Any help would be gratefully received. Kind regards Graham [[alternative HTML version deleted]] __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] Box M test
Dear List I am looking for a script that will calculate the Box M test to test the homogeneity of the variance/covariance matrix between two matrices. If anyone could send me the script I would appreciate it. I am aware of the scepticism about this test, where due to extreme sensitivity a p value of 0.01 is recommended. Despite this however Box's M test is the established method for identification of stable strategic time periods within the strategic management literature and I would like the opportunity to use this method within either R or S plus. Any help would be gratefully received. Kind regards Graham Kind regards Dr Graham Leask Economics and Strategy Group Aston Business School Aston University Aston Triangle Birmingham B4 7ET Tel: Direct line 0121 204 3150 email [EMAIL PROTECTED] [[alternative HTML version deleted]] __ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
