Object

Title: A New Clustering Method for Nominal Attributes

Subtitle:

Raport Badawczy = Research Report ; RB/38/2011

Publisher:

Instytut Badań Systemowych. Polska Akademia Nauk ; Systems Research Institute. Polish Academy of Sciences

Place of publishing:

Warszawa

Description:

24 pages ; 21 cm ; Bibliography p. 24

Abstract:

In this paper is presented a new method for clustering of objects described by nominal attributes. The method is based on the set theory. The similarities measures and distance measures between objects are attuned for nominal attributes and are based on the conditions’ dominance for each attribute. There are introduced a definition of conditions’ perturbation for each attribute and a measure of clusters’ perturbations. They allow us to describe in some sense clusters’ similarities and are used for coupling of clusters by twos. A pair ofclusters described by the lowest value of clusters’ perturbation measure is coupled creating a new cluster, and after removing this pair the number of clusters is decreased by one. Next, there is defined a measure ofclusters’ concentration as well as a measure of cluster’s distance. These two measures resorted to compute an evaluation of clusters’ set. This evaluation allows us to compare different sets of clusters which are obtained during clustering process. In the paper the new definitions are elucidated by examples, and there is considered a case of data series clustering problem as an illustrative example.

Relation:

Raport Badawczy = Research Report

Detailed Resource Type:

Report

Resource Identifier:

oai:rcin.org.pl:109202

Source:

RB-2011-38

Language:

eng

Language of abstract:

eng

Rights:

Creative Commons Attribution BY 4.0 license

Terms of use:

Copyright-protected material. [CC BY 4.0] May be used within the scope specified in Creative Commons Attribution BY 4.0 license, full text available at: ; -

Digitizing institution:

Systems Research Institute of the Polish Academy of Sciences

Original in:

Library of Systems Research Institute PAS

Projects co-financed by:

Operational Program Digital Poland, 2014-2020, Measure 2.3: Digital accessibility and usefulness of public sector information; funds from the European Regional Development Fund and national co-financing from the state budget.

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