Clustering
The task of prediction models is to determine the group (class, category…) into which some particular data instance belongs – given enough training data in which the class membership is known. In contrast, the task of clustering is to determine the groups themselves, based on the data alone.

Clusters in the Classroom
Building a Hierarchy of Groups based on Similarities
mathematics

Discovering Animal Groups
How the snail buddied up with termites and fleas
Mathematics, Biology

Climate zones of Europe (or other continents)
Exploring climate zones of different continents
geography, mathematics

Slovenian surnames
Observing the distribution of surnames in Slovenia
slovenian, geography, history
