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A Classification Methodology based on Subspace Graphs Learning

9 September 2019
Riccardo La Grassa
I. Gallo
Alessandro Calefati
D. Ognibene
ArXiv (abs)PDFHTML
Abstract

In this paper, we propose a design methodology for one-class classifiers using an ensemble-of-classifiers approach. The objective is to select the best structures created during the training phase using an ensemble of spanning trees. It takes the best classifier, partitioning the area near a pattern into γγ−2\gamma^{\gamma-2}γγ−2 sub-spaces and combining all possible spanning trees that can be created starting from γ\gammaγ nodes. The proposed method leverages on a supervised classification methodology and the concept of minimum distance. We evaluate our approach on well-known benchmark datasets and results obtained demonstrate that it achieves comparable and, in many cases, state-of-the-art results. Moreover, it obtains good performance even with unbalanced datasets.

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