I believe there is also an example of how to select initial values for k-means in Modern and Applied Statistics with S (Venables and Ripley). Ken
On 02/29/12, Pascal Oettli wrote:
Dear Rui, Did you have a look at 'pracma' package? There is a 'kmeanspp' function. Best Regards, Pascal Le 29/02/2012 19:52, Rui Esteves a ?crit :
Dear Pascal,
From Wikipedia:
In applied statistics, k-means++ is an algorithm for choosing the initial values (or "seeds") for the k-means clustering algorithm. It was proposed in 2007 by David Arthur and Sergei Vassilvitskii, as an approximation algorithm for the NP-hard k-means problem?a way of avoiding the sometimes poor clusterings found by the standard k-means algorithm. On Wed, Feb 29, 2012 at 11:33 AM, Pascal Oettli <oettli at eps.s.u-tokyo.ac.jp> wrote:
Dear Rui, What "++" means? There is kmeans in "stats" package. Best Regards, Pascal Le 29/02/2012 19:20, Rui Esteves a ?crit :
Dear all. I am searching for KMeans ++ for R. I cannot find it. Do you know any package with it? Best regards, Rui
______________________________________________ R-help at 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.
-- Dr. Pascal Oettli Project Research Associate Department of Earth and Planetary Science Graduate School of Science The University of Tokyo
______________________________________________ R-help at 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.