概述
The
Davies–Bouldin index (DBI) is a metric for evaluating
clustering algorithms.
[1]
Let
Ci be a cluster of vectors. Let
Xj be a vector on
Ci.
Here
Ai is the centroid of
Ci.
Si is a measure of scatter within the cluster.
- Mi,j is a measure of separation between cluster Ci and cluster Cj.
- ak,i is the kth element of Ai.
[edit]Notes and references
- ^ Davies, D. L.; Bouldin, D. W. A cluster separation measure.IEEE Trans. Pattern Anal. Mach. Intelligence 1979, 1, 224–227. 论文见附件
转载于:https://blog.51cto.com/visionsky/291912
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