Re: [R] pam() clustering for large data sets

2011-05-17 Thread Christian Hennig
Dear Lilia, I'm not sure whether this is particularly helpful in your situation, but sometimes it is possible to emulate the same (or approximately the same) distance measure as Euclidean distance between points that are somehow rescaled and retransformed. In this case, you can rescale and re

[R] pam() clustering for large data sets

2011-05-16 Thread Lilia Nedialkova
Hello everyone, I need to do k-medoids clustering for data which consists of 50,000 observations. I have computed distances between the observations separately and tried to use those with pam(). I got the "cannot allocate vector of length" error and I realize this job is too memory intensive. I