Unsupervised Topographic Learning for Spatiotemporal Data Mining

Table 1

Value of the Dunn index obtained from various dissimilarity measures to compare various data distributions.

Distributions	Average	Minimum	Ward	Proposed
Ring 1–3 + Spiral 1-2	0.4	0.9	0.5	1.6
Noise 1–4	1.1	1.4	22.0	115.3
Shuffle 1-2	1.1	16.5	6.3	27.6