Reference : Impact of contamination on the TCLUST procedure
Scientific congresses and symposiums : Unpublished conference
Physical, chemical, mathematical & earth Sciences : Mathematics
http://hdl.handle.net/2268/106053
Impact of contamination on the TCLUST procedure
English
Ruwet, Christel mailto [Université de Liège - ULg > Département de mathématique > Statistique mathématique >]
García-Escudero, Luis Angel mailto [Universidad de Valladolid - UVa > Departamento de Estadística e Investigación operativa > > >]
Gordaliza, Alfonso mailto [Universidad de Valladolid - UVa Departamento de Estadística e Investigación operativa > Departamento de Estadística e Investigación operativa > > >]
Mayo-Iscar, Agustin mailto [Universidad de Valladolid - UVa > Departamento de Estadística e Investigación operativa > > >]
18-Dec-2011
No
International
4th International Conference of ERCIM working group on Computing and Statistics
du 17 décembre 2011 au 19 décembre 2011
Londres
United Kingdom
[en] The TCLUST procedure is a robust clustering procedure that performs clus-
tering with the aim of tting clusters with di erent scatters and weights. As
the corresponding objective function can be unbounded, a restriction is added
on the eigenvalues-ratio of the scatter matrices. The robustness of the method
is guaranteed by allowing the trimming of a given proportion of observations.
The resistance to contamination of that procedure will be studied. Results con-
cerning breakdown points and some new criteria in robust cluster analysis, such
as the dissolution point and the isolation robustness, will be presented.
http://hdl.handle.net/2268/106053

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