582364 Data mining, 4 cu Lecture 9:
582364 Data mining, 4 cu Lecture 9:
582364 Data mining, 4 cu Lecture 9:
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Spatial <strong>Data</strong> <strong>mining</strong> tasks: Clustering<br />
� Clustering can reveal new groupings<br />
in spatially organized data<br />
� In the picture, clustering of the<br />
European map is based on<br />
oc<strong>cu</strong>rrence of species<br />
� Each cell is a 50x50 km area where<br />
the oc<strong>cu</strong>rrence of 124 species has<br />
been recorded<br />
� Clusters = similar oc<strong>cu</strong>rrence profiles<br />
� Many methods available: k-means<br />
clustering, hierarchical clustering, …<br />
<strong>Data</strong> <strong>mining</strong>, Spring 2010 (Slides adapted from Tan, Steinbach Kumar)
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