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Bagged kernel SOM

Abstract : In a number of real-life applications, the user is interested in analyzing non vectorial data, for which kernels are useful tools that embed data into an (implicit) Euclidean space. However, when using such approaches with prototype-based methods, the computational time is related to the number of observations (because the prototypes are expressed as convex combinations of the original data). Also, a side effect of the method is that the interpretability of the prototypes is lost. In the present paper, we propose to overcome these two issues by using a bagging approach. The results are illustrated on simulated data sets and compared to alternatives found in the literature.
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https://hal.archives-ouvertes.fr/hal-01018374
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Submitted on : Friday, July 4, 2014 - 10:55:04 AM
Last modification on : Tuesday, January 19, 2021 - 11:08:39 AM
Long-term archiving on: : Saturday, October 4, 2014 - 11:01:21 AM

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Jérôme Mariette, Madalina Olteanu, Julien Boelaert, Nathalie Vialaneix. Bagged kernel SOM. 10th International Workshop, WSOM 2014, Hochschule Esslingen University of Applied Sciences. DEU., Jul 2014, Mittweida, Germany. pp.45-54, ⟨10.1007/978-3-319-07695-9⟩. ⟨hal-01018374⟩

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