How do I implement k-medoid clustering algorithms like PAM and CLARA in python 2.7? I am currently using Anaconda, and working with ipython 2.7. I have tried scipy.clusters but they don't seem to have the above algorithms. Please help
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$\begingroup$ This seems to be more a computing question rather than a statistics one and therefore would be better suited for Stack Overflow $\endgroup$– AndyMay 27, 2014 at 12:25
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$\begingroup$ I wouldn't agree. Asking for a data analytic algorithm and/or theory is in tune with our site. Particular programming questions should go to SO. $\endgroup$– ttnphnsMay 27, 2014 at 13:03
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3$\begingroup$ This is actually not a reasonable question at all. Obviously, PAM isn't implemented yet, and the author is essentially looking for someone to do his work for him... $\endgroup$– Has QUIT--Anony-MousseMay 30, 2014 at 15:54
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$\begingroup$ This algorithm has been included in a recent pull request. $\endgroup$– Jason SanchezAug 1, 2015 at 17:44
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3 Answers
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Start implementing!
We cannot answer a question like yours. You need to have a concrete question, not "where do I start".
If you don't really want to implement it yourself, you may need to choose a different tool, such as ELKI or R or Matlab that do already include PAM and maybe CLARA, too.
answered May 30, 2014 at 15:56
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pyclustering is your best bet:
https://github.com/annoviko/pyclustering
https://pypi.python.org/pypi/pyclustering/0.8.0
They've got PAM, and CLARANS (which may be the same as CLARA?).
Looks like the git repo has been around since February 2014.
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Have you tried looking into Scikit learn? I have used been it quite a lot in ipython so can verify that it works well.
You can find all the documentation on their clustering algorithms here: http://scikit-learn.org/stable/modules/clustering.html#clustering
I don't exactly see something for k-medoid but maybe they have something there that can help.
Also, you can check out http://mlpy.sourceforge.net/. I have not used this package so cannot comment on how well it performs.
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2$\begingroup$ This seems to be not an answer to the OP's straightforward question. In none of the two links I could find any mentioning of k-medoid. $\endgroup$– ttnphnsMay 27, 2014 at 13:42
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$\begingroup$ I agree that these links don't directly answer the question (as I pointed out) but I wanted to make the OP aware of the commercially available software for clustering in python. There are many methods available there and maybe one can be used. $\endgroup$– mike1886May 27, 2014 at 13:52