[R] agglomerative coefficient in agnes (cluster)

[Weiguang Shi]

Thanks again Andy.

The definition of AC is understood, yet I have trouble
picturing the amount of "clear clustering structure"
it measures. To put things into perspective, for two
series 
   1,2,1000,1001
and 
   1,2,3,1000
agnes(x, method="single") generates ac values of 
0.998998 and 0.0.7492477 respectively, yet it seems to
me that both have fairly clear clustering structures.

 --- "Liaw, Andy" <andy_liaw at merck.com> wrote: 
> BTW, I checked the book.  You're not going find much
> more than that.
> 
Thanks for checking.

Weiguang