TY - JOUR TI - On the number of clusterings in a hierarchical classication model with overlapping clusters AU - Roman, Adam AU - Podolak, Igor T. AU - DeszyƄska, Agnieszka TI - On the number of clusterings in a hierarchical classication model with overlapping clusters AB - This paper shows a new combinatorial problem which emerged from studies on an artificial intelligence classification model of a hierarchical classifier. We introduce the notion of proper clustering and show how to count their number in a special case when 3 clusters are allowed. An algorithm that generates all clusterings is given. We also show that the proposed approach can be generalized to any number of clusters, and can be automatized. Finally, we show the relationship between the problem of counting clusterings and the Dedekind problem. VL - 2011 IS - Volume 20 PY - 2012 SN - 1732-3916 C1 - 2083-8476 SP - 137 EP - 159 DO - 10.4467/20838476SI.11.007.0293 UR - https://ejournals.eu/en/journal/schedae-informaticae/article/on-the-number-of-clusterings-in-a-hierarchical-classication-model-with-overlapping-clusters