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IEEE transactions on knowledge and data engineering, 2016-07, Vol.28 (7), p.1864-1877
2016

Details

Autor(en) / Beteiligte
Titel
Scalable Semi-Supervised Learning by Efficient Anchor Graph Regularization
Ist Teil von
  • IEEE transactions on knowledge and data engineering, 2016-07, Vol.28 (7), p.1864-1877
Ort / Verlag
New York: IEEE
Erscheinungsjahr
2016
Link zum Volltext
Quelle
IEEE Electronic Library (IEL)
Beschreibungen/Notizen
  • Many graph-based semi-supervised learning methods for large datasets have been proposed to cope with the rapidly increasing size of data, such as Anchor Graph Regularization (AGR). This model builds a regularization framework by exploring the underlying structure of the whole dataset with both datapoints and anchors. Nevertheless, AGR still has limitations in its two components: (1) in anchor graph construction, the estimation of the local weights between each datapoint and its neighboring anchors could be biased and relatively slow; and (2) in anchor graph regularization, the adjacency matrix that estimates the relationship between datapoints, is not sufficiently effective. In this paper, we develop an Efficient Anchor Graph Regularization (EAGR) by tackling these issues. First, we propose a fast local anchor embedding method, which reformulates the optimization of local weights and obtains an analytical solution. We show that this method better reconstructs datapoints with anchors and speeds up the optimizing process. Second, we propose a new adjacency matrix among anchors by considering the commonly linked datapoints, which leads to a more effective normalized graph Laplacian over anchors. We show that, with the novel local weight estimation and normalized graph Laplacian, EAGR is able to achieve better classification accuracy with much less computational costs. Experimental results on several publicly available datasets demonstrate the effectiveness of our approach.
Sprache
Englisch
Identifikatoren
ISSN: 1041-4347
eISSN: 1558-2191
DOI: 10.1109/TKDE.2016.2535367
Titel-ID: cdi_proquest_journals_1795941003

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