Weighted Evidence Accumulation Clustering Using Subsampling

F. Jorge F. Duarte, Ana L. N. Fred, Fátima Rodrigues, João M. M. Duarte, André Lourenço

2006

Abstract

We introduce an approach based on evidence accumulation (EAC) for combining partitions in a clustering ensemble. EAC uses a voting mechanism to produce a co-association matrix based on the pairwise associations obtained from N partitions and where each partition has equal weight in the combination process. By applying a clustering algorithm to this co-association matrix we obtain the final data partition. In this paper we propose a clustering ensemble combination approach that uses subsampling and that weights differently the partitions (WEACS). We use two ways of weighting each partition: SWEACS, using a single validation index, and JWEACS, using a committee of indices. We compare combination results with the EAC technique and the HGPA, MCLA and CSPA methods by Strehl and Gosh using subsampling, and conclude that the WEACS approaches generally obtain better results. As a complementary step to the WEACS approach, we combine all the final data partitions produced by the different variations of the method and use the Ward Link algorithm to obtain the final data partition.

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Paper Citation


in Harvard Style

Jorge F. Duarte F., L. N. Fred A., Rodrigues F., M. M. Duarte J. and Lourenço A. (2006). Weighted Evidence Accumulation Clustering Using Subsampling . In 6th International Workshop on Pattern Recognition in Information Systems - Volume 1: PRIS, (ICEIS 2006) ISBN 978-972-8865-55-9, pages 104-116. DOI: 10.5220/0002504501040116


in Bibtex Style

@conference{pris06,
author={F. Jorge F. Duarte and Ana L. N. Fred and Fátima Rodrigues and João M. M. Duarte and André Lourenço},
title={Weighted Evidence Accumulation Clustering Using Subsampling},
booktitle={6th International Workshop on Pattern Recognition in Information Systems - Volume 1: PRIS, (ICEIS 2006)},
year={2006},
pages={104-116},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0002504501040116},
isbn={978-972-8865-55-9},
}


in EndNote Style

TY - CONF
JO - 6th International Workshop on Pattern Recognition in Information Systems - Volume 1: PRIS, (ICEIS 2006)
TI - Weighted Evidence Accumulation Clustering Using Subsampling
SN - 978-972-8865-55-9
AU - Jorge F. Duarte F.
AU - L. N. Fred A.
AU - Rodrigues F.
AU - M. M. Duarte J.
AU - Lourenço A.
PY - 2006
SP - 104
EP - 116
DO - 10.5220/0002504501040116