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Re: Making sense of data: Clustering OR A coding challenge

by srdst13 (Pilgrim)
on Apr 04, 2006 at 01:27 UTC ( #541066=note: print w/ replies, xml ) Need Help??


in reply to Making sense of data: Clustering OR A coding challenge

For most problems like this, I move over to using a programming language with more context-specific tools like R. At least a dozen clustering methods are available and there are facilities for estimating the "true" number of clusters. Using it is fairly simple from perl. Just write a little script that you call from the command line that reads a file of numbers that you supply. The output can be graphical or some numeric summary--whatever suits your needs. You can also use the perl module, Statistics::R to interact without the intermediate running of an R script from the commmand line.

Sean


Comment on Re: Making sense of data: Clustering OR A coding challenge
Re^2: Making sense of data: Clustering OR A coding challenge
by Win (Novice) on Apr 04, 2006 at 10:16 UTC
    I am quite interested in this. Can you please offer Perl scripts that does this by way of example. Are the graphs that you get from R really much better than Excel? Is there a web page that demonstrates that graphical capabilities of R?
        I can see that, when using macs, the graphics are very good. Almost as good as Matlab on windows.

      "Is there a web page that demonstrates that graphical capabilities of R?"

      For graphical examples using R, check out this website. If there are any questions as to whether R can generate better graphs than Excel, that website should answer them.


      Sean

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