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IEEE transaction on neural networks and learning systems, 2016-04, Vol.27 (4), p.822-835
2016

Details

Autor(en) / Beteiligte
Titel
Robust Gradient Learning With Applications
Ist Teil von
  • IEEE transaction on neural networks and learning systems, 2016-04, Vol.27 (4), p.822-835
Ort / Verlag
United States: IEEE
Erscheinungsjahr
2016
Link zum Volltext
Quelle
IEEE Xplore
Beschreibungen/Notizen
  • This paper addresses the robust gradient learning (RGL) problem. Gradient learning models aim at learning the gradient vector of some target functions in supervised learning problems, which can be further used to applications, such as variable selection, coordinate covariance estimation, and supervised dimension reduction. However, existing GL models are not robust to outliers or heavy-tailed noise. This paper provides an RGL framework to address this problem in both regression and classification. This is achieved by introducing a robust regression loss function and proposing a robust classification loss. Moreover, our RGL algorithm works in an instance-based kernelized dictionary instead of some fixed reproducing kernel Hilbert space, which may provide more flexibility. To solve the proposed nonconvex model, a simple computational algorithm based on gradient descent is provided and the convergence of the proposed method is also analyzed. We then apply the proposed RGL model to applications, such as nonlinear variable selection and coordinate covariance estimation. The efficiency of our proposed model is verified on both synthetic and real data sets.
Sprache
Englisch
Identifikatoren
ISSN: 2162-237X
eISSN: 2162-2388
DOI: 10.1109/TNNLS.2015.2425215
Titel-ID: cdi_crossref_primary_10_1109_TNNLS_2015_2425215

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