klavan at tiscalinet.it
Wed May 22 21:35:33 CEST 2002
Hello. I don't know if you can help me but I try.
I have a collection of objects, we suppose that they are 1000. After some
works that I made I divided this collection in some clusters. Suppose to
have obtained 50 clusters. For each cluster I found a particular value
called Precision, where 0<Precision<1.
Taken the firs cluster I want to compare his Precision with the precision of
his complement that his obtained by the union of the remainder clusters.
After this I want to take the second cluster and make the same thing
comparing his precision with the precision of his complement. Take the third
cluster and so on. I want to do this for each cluster.
I want to use a test that compare the precision obtained for each cluster
with the precision of each complement. I want to know if the precision of
the singolar clusters are significantly different respect the precision of
the complement. I think that I have to make a vector with the precision of
the clusters and a vector with the precision of the complement. Maybe I have
to find the means of each vector and compare them. But wich is the test that
I have to use? Is it a t-student? And wich command I have to use if I want
to make this test?
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