February 2005
Beginner to intermediate
540 pages
14h 9m
English
Content preview from Fuzzy Modeling and Genetic Algorithms for Data Mining and Exploration
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Chapter 7 Fuzzy Clustering
Stability
The idea of stability is a measure of the steady state of a cluster. As new
data points are added to a cluster, the center is recalculated. The center
moves as the weighted center of gravity changes. At some point, when
enough points are added, the center no longer changes. At this point the
cluster is stable.
7.2 Principles of Cluster Detection
Cluster analysis is a technique for breaking data down into related com-
ponents in such a way that patterns and order become visible. In fact,
cluster analysis has the virtue of strengthening the exposure of patterns
and behaviors as more and more data becomes available. A cluster has
a center of gravity, which is basically the weighted average of the clus-
ter. Data
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