search for: kosmidi

Dear all, After running a glm, I use the summary ( ) function to extract its coefficients and related statistics for further use. Unfortunately, the screen only displays a small (last) part of the results. I tried to overcome the problem by creating/saving an object "coef" for coefficients of the model and export/save it e.g. as a cvs document. While I succed with this operatiion, I do

...the problem can be hard --- it took us some time before we started suspecting dbeta. Interestingly, this appears to happen close to what R considers infinity. Typing 1.799e+308 into R returns Inf. I hope the above limited in scope analysis is informative. Best regards, Ioannis -- Dr Ioannis Kosmidis Department of Statistical Science, University College, London, WC1E 6BT, UK Webpage: http://www.ucl.ac.uk/~ucakiko

...October 29, 2010 to useR-2011_at_R-project.org. A web page offering more information on the `useR!' conference is available at http://www.R-project.org/useR-2011 We hope to see you in Coventry! The organizing committee: John Aston, Julia Brettschneider, David Firth, Ashley Ford, Ioannis Kosmidis, Tom Nichols, Elke Th?nnes and Heather Turner _______________________________________________ R-announce at stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-announce

...on any R-related topic and should particularly appeal to R newbies. Participants wishing to give such a talk must provide an informative title on their registration form. We hope to see you in Coventry! The organizing committee: John Aston, Julia Brettschneider, David Firth, Ashley Ford, Ioannis Kosmidis, Tom Nichols, Elke Th?nnes and Heather Turner _______________________________________________ R-announce at r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-announce

...October 29, 2010 to useR-2011_at_R-project.org. A web page offering more information on the `useR!' conference is available at http://www.R-project.org/useR-2011 We hope to see you in Coventry! The organizing committee: John Aston, Julia Brettschneider, David Firth, Ashley Ford, Ioannis Kosmidis, Tom Nichols, Elke Th?nnes and Heather Turner _______________________________________________ R-announce at stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-announce

...on any R-related topic and should particularly appeal to R newbies. Participants wishing to give such a talk must provide an informative title on their registration form. We hope to see you in Coventry! The organizing committee: John Aston, Julia Brettschneider, David Firth, Ashley Ford, Ioannis Kosmidis, Tom Nichols, Elke Th?nnes and Heather Turner _______________________________________________ R-announce at r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-announce

Dear List, Apologies for this off-topic post but it is R-related in the sense that I am trying to understand what R is telling me with the data to hand. ROC curves have recently been used to determine a dissimilarity threshold for identifying whether two samples are from the same "type" or not. Given the bashing that ROC curves get whenever anyone asks about them on this list (and

...ecent problem I enquired on the list about) where the fitted values > really do become numerically 0 or 1 without separation. > > For example, see this response to my original question on the list: > > http://article.gmane.org/gmane.comp.lang.r.general/134472/ > > There Ioannis Kosmidis presents a number of ways to investigate the > results of a logit model fit for such issues. > > G > > > > > Cheers, > > Gad > > > -- > %~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~% > Dr. Gavin Simpson [t] +44 (0)20...

I am sorry if this question sounds basic but I am having trouble understanding a warning message I have been receiving in R after attempting logistic regression. I have been using the logistic regression function in R to analyse a simulated data set. The dependent variable "failure" has an outcome of either 0 (success) or 1 (failure). Both the independent variables have been previously

Hi I have a character matrix with 2 columns A and B, If I want to sort the matrix based on the column B, but based on a specific order of characters: mat<-cbind(c('w','x','y','z'),c('a','b','c','d')) ind<-c('c','b','d','a') I want "mat" to be sorted by the sequence in "ind":

...e been changed to reflect this: > packages which included 'name' in the signature of their > methods need to be updated and re-installed. > > o The handling of the 'method' argument of glm() has been > refined following suggestions by Ioannis Kosmidis and Heather > Turner. > > o str() gains a new argument 'list.len' with default 99, limiting the > number of list() items (per level), thanks to suggestions from > David Winsenius. > > o Having formal arguments of an S4 method in a differe...

...eneric functions have been changed to reflect this: packages which included 'name' in the signature of their methods need to be updated and re-installed. o The handling of the 'method' argument of glm() has been refined following suggestions by Ioannis Kosmidis and Heather Turner. o str() gains a new argument 'list.len' with default 99, limiting the number of list() items (per level), thanks to suggestions from David Winsenius. o Having formal arguments of an S4 method in a different order from the ge...

...eneric functions have been changed to reflect this: packages which included 'name' in the signature of their methods need to be updated and re-installed. o The handling of the 'method' argument of glm() has been refined following suggestions by Ioannis Kosmidis and Heather Turner. o str() gains a new argument 'list.len' with default 99, limiting the number of list() items (per level), thanks to suggestions from David Winsenius. o Having formal arguments of an S4 method in a different order from the ge...

...t;r-help@r-project.org" <r-help@r-project.org> Message-ID: <1243434275.2975.65.camel@desktop.localhost> Content-Type: text/plain; charset="us-ascii" Try reading this thread: http://thread.gmane.org/gmane.comp.lang.r.general/134368/focus=134475 especially the posts by I Kosmidis which show you how to diagnose problems in logit model fits like this. There is a statement about this warning in ?glm as well and a pointer to a reference which discusses a source of the warning. G On Wed, 2009-05-27 at 11:22 +0100, Winter, Katherine wrote: > I am sorry if this question sou...