Robust Self-Supervised Convolutional Neural Network for Subspace Clustering and Classification [article]

Dario Sitnik, Ivica Kopriva
<span title="2020-04-03">2020</span> <i > arXiv </i> &nbsp; <span class="release-stage" >pre-print</span>
Insufficient capability of existing subspace clustering methods to handle data coming from nonlinear manifolds, data corruptions, and out-of-sample data hinders their applicability to address real-world clustering and classification problems. This paper proposes the robust formulation of the self-supervised convolutional subspace clustering network (S^2ConvSCN) that incorporates the fully connected (FC) layer and, thus, it is capable for handling out-of-sample data by classifying them using a
more &raquo; ... ftmax classifier. S^2ConvSCN clusters data coming from nonlinear manifolds by learning the linear self-representation model in the feature space. Robustness to data corruptions is achieved by using the correntropy induced metric (CIM) of the error. Furthermore, the block-diagonal (BD) structure of the representation matrix is enforced explicitly through BD regularization. In a truly unsupervised training environment, Robust S^2ConvSCN outperforms its baseline version by a significant amount for both seen and unseen data on four well-known datasets. Arguably, such an ablation study has not been reported before.
<span class="external-identifiers"> <a target="_blank" rel="external noopener" href="">arXiv:2004.03375v1</a> <a target="_blank" rel="external noopener" href="">fatcat:a65leimhzvbs3gpwllxgxaoo5m</a> </span>
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