Biology Reference
In-Depth Information
j.d.f. value
2
340
320
1.5
300
280
1
260
240
0.5
220
200
0
180
160
−0.5
140
1
2
3
4
5
6
7
8
9
10
number of clusters
−1
−0.5
0
0.5
1
1.5
2
2.5
(a) A data set with
K
=3clusters
(b) The JDF as a function of
K
Fig. 2.10.
Note the change of slope of the JDF at
K
=3
j.d.f. value
2
350
1.5
300
1
250
0.5
200
0
150
−0.5
100
1
2
3
4
5
6
7
8
9
10
number of clusters
−0.5
0
0.5
1
1.5
2
2.5
(a) A data set with
K
=4clusters
(b) The JDF as a function of
K
Fig. 2.11.
Note the change of slope of the JDF at
K
=4
References
[1]
M. Arav. Contour approximation of data and the harmonic mean.
Mathematical In-
equalities & Applications
, to appear.
[2]
A. Ben-Israel, and C. Iyigun. Probabilistic distance clustering,
Journal of Classifica-
tion
, to appear.
[3]
L. Cooper. Heuristic methods for location-allocation problems.
SIAM Review
, 6, 37-
53, 1964.
[4]
M. Halkidi, Y. Batistakis, and M. Vazirgiannis, Cluster validity methods,
ACM SIG-
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