Rough clustering utilising the principle of indifference

Journal article


Peters, Georg. (2014) Rough clustering utilising the principle of indifference. Information Sciences. 277, pp. 358 - 374. https://doi.org/10.1016/j.ins.2014.02.073
AuthorsPeters, Georg
Abstract

Clustering is one of the most widely used method in data mining with applications in virtually any domain. Its main objective is to group similar objects into the same cluster, while dissimilar objects should belong to different clusters. In particular k-means clustering, as member of the partitioning clustering family, has obtained great popularity. The classic (hard) k-means assigns an object unambiguously to one and only one cluster. To address uncertainty soft clustering has been introduced using concepts like fuzziness, possibility or roughness. A decade ago Lingras and West introduced a k-means approach based on the interval interpretation of rough sets theory. In the past years their rough k-means has gained increasing attention. In our paper, we propose a refined rough k-means algorithm that utilizes Laplace’s principle of indifference to calculate the means. As we will discuss this provides a sounder justification for the impacts of the objects in the approximations in comparison to established rough k-means algorithms. Furthermore, the weighting in the mean function is based on individual objects rather than on aggregated sub-means. In experiments, we compare the refined algorithm to related approaches.

Keywordsrough k-means; Laplace’s principle of indifference; overlapping clusters
Year2014
JournalInformation Sciences
Journal citation277, pp. 358 - 374
PublisherElsevier Inc.
ISSN0020-0255
Digital Object Identifier (DOI)https://doi.org/10.1016/j.ins.2014.02.073
Scopus EID2-s2.0-84901803247
Web address (URL)http://ezproxy.acu.edu.au/login?url=http://www.sciencedirect.com/science/article/pii/S0020025514001790
Page range358 - 374
Research GroupSchool of Arts
Place of publicationUnited States of America
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