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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Xiao Zhang Lin Liang Heung-Yeung Shum |
| Copyright Year | 2009 |
| Description | Author affiliation: Microsoft Research Asia, Beijing, China (Lin Liang) || Microsoft Corporation, Redmond, WA, USA (Heung-Yeung Shum) || Center for Advanced Study, Tsinghua University, Beijing, China (Xiao Zhang) |
| Abstract | The error correcting output codes (ECOC) is a general framework to extend any binary classifier to the multiclass case. Finding the optimal ECOC is known as a NP hard problem. In this paper, we present a spectral analysis approach for the design of ECOC. We construct a similarity graph of the classes and generate ECOC with a subset of thresholded eigenvectors of the graph Laplacian. Using the spectral analysis, the coding efficiency, classifier's diversity, Hamming distance among codewords, and binary classifiers' accuracy can be simultaneously considered. The resulting ECOC is efficient, thus only a small set of binary classifiers are to be evaluated when making a decision. In experiments with large multiclass problems, our method is between 3 and 12 times faster comparing to one-against-all, with comparable classification accuracy. Our method also shows a better performance than the most of leading methods, e.g., ClassMap, random dense ECOC, random sparse ECOC, and discriminant ECOC. |
| Starting Page | 1111 |
| Ending Page | 1118 |
| File Size | 290662 |
| Page Count | 8 |
| File Format | |
| ISBN | 9781424444205 |
| ISSN | 15505499 |
| DOI | 10.1109/ICCV.2009.5459355 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2009-09-29 |
| Publisher Place | Japan |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Error correction codes Face recognition Matrix decomposition Spectral analysis Laplace equations Computational complexity Asia NP-hard problem Hamming distance Large-scale systems |
| Content Type | Text |
| Resource Type | Article |
| Subject | Computer Vision and Pattern Recognition Software |
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