[R] I would appreciate some help with clustering

[Sarah Goslee]

Is this homework? If so, you should discuss it with the instructor,
not us.

Regardless, the methods you suggested are a reasonable place
to start, and you perhaps should have done so first before asking
here. You may well have gotten the results you needed without
the delay of waiting for an answer on the list.

Sarab

On Tue, Dec 30, 2008 at 6:59 AM,  <mauede at alice.it> wrote:
> I have a binary vector whose length is known.
> Such a vector contains an unspecified number of 1s.
> My goal is
> 1. to generate as many clusters as the number of 1s
> 2. to place the 1 as much as possible at the center of its own cluster
>
> Example. Say I have the following binary vector:
> v <- c(0,0,1,0,0,0,0,1,0,1,0,0)
> Then I have to get 3 clusters.
> I can generate a matrix containing the distance of each element from each one of the
> clusters center (the 1s):
>
>       1st_1    2nd_1  3rd_1
> ---|-----------------------------------
> 0 |      2           7          9
> 0 |     1            6          8
> 1 |      0           5          7
> 0 |      1           4          6
> 0 |      2           3          5
> 0 |      3           2          4
> 0 |      4           1          3
> 1 |      5           0          2
> 0 |      6           1          1
> 1 |      7           2          0
> 0 |      8           3          1
> 0 |      9           4          2
>
> Should I input such matrix to R function "dist" and then use for instance PAM or KMEAN
> to get the expected 3 clusters ?
> I would greatly appreciate some help.
>
> Thank you so much.
> Maura
>
-- 
Sarah Goslee
http://www.functionaldiversity.org