[R] possible bug in flexclust
Friedrich.Leisch at R-project.org
Friedrich.Leisch at R-project.org
Thu Jun 5 13:47:53 CEST 2008
>>>>> On Wed, 4 Jun 2008 13:40:58 -0400,
>>>>> Gary Lewis (GL) wrote:
> Hi - Writing to see if someone 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 at 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, 312, 118
> problem:
> 4 of the 8 clusters differ in sizes. They're close but I'd think they should
> be exact.
Strange. What numbers do you get from
table(r8 at cluster)
? Which version of flexclust?
Best,
Fritz
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