Searching on "multiple raters attributes" at the same site brings up
http://finzi.psych.upenn.edu/R/library/smacof/doc/smacof.pdf (by Jan De Leeuw) .... Which has as one example multiple raters scoring "different breads". On Feb 1, 2012, at 4:41 PM, Luk Arbuckle wrote: > Thanks David, but those are not "multi-response" versions of the > kappa. Extensions to multiple raters are common and well known. I > am hoping someone familiar with multiple response extensions of > kappa might see my post and be able to help. > > As I said, my search on cran has failed. I tried all the expected > keywords, and looked through several kappa functions, but I don't > see any that deal with the multi-response case as I've described > it. Either it isn't available in R, or I'm looking in the wrong > place. > > I did not intentionally double post, nor try to deceive your efforts > to block double posting. I am not receiving my posts, contrary to > my settings, so I rewrote the first one. I thought maybe it was > blocked the first time because someone thought it wasn't an R > question, so I changed the subject. > > Cheers, > > Luk Arbuckle > > On Wed, Feb 1, 2012 at 16:25, David Winsemius wrote: > > On Feb 1, 2012, at 3:13 PM, Luk Arbuckle wrote: > > I'm very sorry for double posting! My r-help setting Receive your own > posts to the list? is set to Yes, and Mail delivery is Enabled. Yet > I did > not get a copy of my post (this message is a reply from my sent > mail). I > only learned of the double posting when I found it copied in an r-help > archive. Again, my apologies. > > I actually had a chance to prevent that second posting. It looked > familiar when viewed in the moderation queue and I took a quick look > at what was in my inbox but since you used a different subject line > my search failed. > > Speaking of searching ... you are asked in the Posting Guide (that > no one reads) to post the specifics of your own efforts. My first > search with "multi-rater kappa" failed. My second search is here: > > http://search.r-project.org/cgi-bin/namazu.cgi?query=multiple+raters+kappa&max=100&result=normal&sort=score&idxname=functions&idxname=Rhelp08&idxname=Rhelp10&idxname=Rhelp02 > > Having gotten more than one apparently on-target result with > relatively minor effort, I see no point in my expending even more > time. > > -- > David. > > > > > > Luk Arbuckle > > On Wed, Feb 1, 2012 at 13:47, Luk Arbuckle wrote: > > I'm looking for a function in R that extends kappa to multiple > raters when > there is more than one response per subject. For example, say a > group of > doctors have to assign diseases to patients. Each patient will be > assigned > one to many diseases, and the number of doctors assigning diseases > to any > one patient will be two to many. > > Here's an extremely simple example of the type of data I might have > (two > patients, three doctors, five diagnoses, and doctor 'x' assigns > multiple > diagnoses per patient): > > pat<-c('a','a','a','b','b','b','b') > doc<-c('x','x','y','x','x','y','z') > dx<-c('1','2','2','3','4','4','5') > df<-data.frame(pat=pat,doc=doc,dx=dx) > df > > I found a paper that can address this [1], although I can't find it > referenced on cran. What I have found on cran doesn't address the > multi-response case. I don't want to reinvent the wheel if this has > already been implemented in R, and I'm still new to the language so > I'm not > a fast coder. If anyone can help it would be greatly appreciated. > > Cheers! > > Luk Arbuckle > > [1] Kraemer, Helena. Extension of the Kappa Coefficient. > Biometrics 36, > no. 2 (1980). http://dx.doi.org/10.2307/2529972. > > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@r-project.org 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. > > David Winsemius, MD > West Hartford, CT > > David Winsemius, MD West Hartford, CT [[alternative HTML version deleted]]
______________________________________________ R-help@r-project.org 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.
