RAD Data comm FLM-1 Guide de l'utilisateur Page 357

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Vue de la page 356
Reports
19-15
n
p
the number of samples in the p'th cluster.
n
q
the number of clusters in the q'th cluster.
n the number of clusters in the k'th cluster formed by joining the p'th and q'th
cluster. n = n
p
+ n
q
d
pq
the distance between cluster p and cluster q.
Single Linkage
This is also called Nearest Neighbor or Minimum Method.
Complete Linkage
This is also called the Furthest Neighbor or Maximum Method.
Single and Complete linkage are good algorithms for indicating outlier
clusters.
UPGAMA
Unweighted pair group method using arithmetic averages. This is also called
Weighted Average Linkage.
WPGAMA
Weighted pair group method using arithmetic averages. This is also called
Average Linkage.
d
ki
min d
pi
d
qi
( , )=
d
ki
max d
pi
d
qi
( , )=
d
ki
n
p
n
-----
d
pi
n
q
n
-----
d
qi
+=
d
ki
0.5 d
pi
0.5 d
qi
+=
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