On the number of clusterings in a hierarchical classi cation model with overlapping clusters
author:
Roman Adam , Podolak Igor , Deszyńska Agnieszka
journal title:
Schedae Informaticae
volume:
20
date of publication
:
2011
pages:
137-157
ISSN:
1732-3916
eISSN:
2083-8476
language:
English
journal language:
English
abstract in English:
This paper shows a new combinatorial problem which emerged
from studies on an arti cial intelligence classi cation model of a hierarchical
classi er. 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.
affiliation:
Wydział Matematyki i Informatyki : Instytut Informatyki i Matematyki Komputerowej