Displaying 2 results from an estimated 2 matches for "kmedians".
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2010 Apr 24
4
DICE Coefficient of similarity measure
Hi,
I wanted the DICE coefficient (similarity measure for binary variables)
to be calculated in R and found that the "igraph" package has the option
of "similarity.dice" to do this. But, for this command, the input object
should be an igraph object. But, I have a dataframe of columns
containing 1's and 0's. Can I convert this dataframe into an igraph
object, so that
2008 Jun 04
1
possible bug in flexclust
...can suggest whether a problem warrants a bug
report. It concerns the use of stepFlexclust in the flexclust package. The
problem concerns the size of clusters returned.
Versions: R-2.7.0 on Windows XP; RODBC_1.2-3
code snippet:
r8 <- stepFlexclust(df,8,nrep=100,FUN=kcca, family=kccaFamily("kmedians"))
summary(r8) ## returns cluster sizes of 51, 115, 218, 73, 118, 140, 311,
and 118
trev <- data.frame(r8@cluster)
sqlSave(ch, trev, rownames="unitid")
in MySQL:
select r8cluster, count(*) from trev group by 1 order by 1 ## returns
cluster sizes of 51, 116, 217, 73, 117, 140,...