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2009
Springer

Analytic Comparison of Self-Organising Maps

10 years 1 months ago
Analytic Comparison of Self-Organising Maps
Abstract. SOMs have proven to be a very powerful tool for data analysis. However, comparing multiple SOMs trained on the same data set using different parameters or initialisations is still a difficult task. In most cases it is performed only via visual inspection or by utilising one of a range of quality measures to compare vector quantisation or topology preservation characteristics of the maps. Yet, comparing SOMs systematically is both necessary as well as a powerful tool to further analyse data: necessary, because it may help to pick the most suitable SOM out of different training runs; a powerful tool because it allows analysing mapping stabilities across a range of parameter settings. In this paper we present an analytic approach to compare multiple SOMs trained on the same data set. Analysis of output space mapping, supported by a set of visualisations, reveals data co-locations and shifts on pairs of SOMs, considering both different neighbourhood sizes at source and target ...
Rudolf Mayer, Robert Neumayer, Doris Baum, Andreas
Added 25 May 2010
Updated 25 May 2010
Type Conference
Year 2009
Where WSOM
Authors Rudolf Mayer, Robert Neumayer, Doris Baum, Andreas Rauber
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