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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Lai, Zhihui Wong, Wai Keung Xu, Yong Yang, Jian Zhang, David |
| Abstract | Locally linear embedding (LLE) is one of the most well-known manifold learning methods. As the representative linear extension of LLE, orthogonal neighborhood preserving projection (ONPP) has attracted widespread attention in the field of dimensionality reduction. In this paper, a unified sparse learning framework is proposed by introducing the sparsity or L1-norm learning, which further extends the LLE-based methods to sparse cases. Theoretical connections between the ONPP and the proposed sparse linear embedding are discovered. The optimal sparse embeddings derived from the proposed framework can be computed by iterating the modified elastic net and singular value decomposition. We also show that the proposed model can be viewed as a general model for sparse linear and nonlinear (kernel) subspace learning. Based on this general model, sparse kernel embedding is also proposed for nonlinear sparse feature extraction. Extensive experiments on five databases demonstrate that the proposed sparse learning framework performs better than the existing subspace learning algorithm, particularly in the cases of small sample sizes. |
| File Format | HTM / HTML |
| ISSN | 2162237X |
| Issue Number | 4 |
| Journal | IEEE Transactions on Neural Networks and Learning Systems |
| Volume Number | 27 |
| e-ISSN | 21622388 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineeers |
| Publisher Date | 2016-04-01 |
| Publisher Place | United States |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Medical Informatics |
| Content Type | Text |
| Resource Type | Article |
| Subject | Artificial Intelligence Computer Networks and Communications Computer Science Applications Software |
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