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. Author manuscript; available in PMC: 2013 Sep 16.
Published in final edited form as: Environ Int. 2012 May 14;45:112–121. doi: 10.1016/j.envint.2012.04.003

Table 2.

Comparing Ward’s clustering and K-means clustering using the Rand Index

# Cluster (k) Rand Index
2 0.75
3 0.81
4 0.73
5 0.77
6 0.78
7 0.81
8 0.84
9 0.84
10 0.84