| Presentation | 2010-09-05 Improving the Accuracy of Least-Squares Probabilistic Classifiers Makoto YAMADA, Masashi SUGIYAMA, Gordon WICHERN, Jaak SIMM, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Least-Squares Probabilistic Classifier (LSPC) has been demonstrated to be a computationally-efficient and accurate classification method. However, since LSPC involves a post-processing step of rounding up its negative parameters to zero for assuring learned probabilities to be non-negative, its classification performance can be unexpectedly changed. In order to avoid this problem, we propose a simple alternative scheme that directly rounds up the classifier's negative outputs, not negative parameters. Through extensive experiments including real-world image classification and audio tagging tasks, we demonstrate that the proposed modification significantly improves the classification accuracy, while the computational advantage of the original LSPC is kept unchanged. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Least-Squares Probabilistic Classifier / Kernel Logistic Regression / Density Ratio / PASCAL VOC 2010 / Freesound |
| Paper # | PRMU2010-60,IBISML2010-32 |
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| Conference Information | |
| Committee | PRMU |
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| Conference Date | 2010/8/29(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
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| Paper Information | |
| Registration To | Pattern Recognition and Media Understanding (PRMU) |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Improving the Accuracy of Least-Squares Probabilistic Classifiers |
| Sub Title (in English) | |
| Keyword(1) | Least-Squares Probabilistic Classifier |
| Keyword(2) | Kernel Logistic Regression |
| Keyword(3) | Density Ratio |
| Keyword(4) | PASCAL VOC 2010 |
| Keyword(5) | Freesound |
| 1st Author's Name | Makoto YAMADA |
| 1st Author's Affiliation | Department of Computer Science, Tokyo Institute of Technology() |
| 2nd Author's Name | Masashi SUGIYAMA |
| 2nd Author's Affiliation | Department of Computer Science, Tokyo Institute of Technology |
| 3rd Author's Name | Gordon WICHERN |
| 3rd Author's Affiliation | MIT Lincoln Laboratory |
| 4th Author's Name | Jaak SIMM |
| 4th Author's Affiliation | Department of Computer Science, Tokyo Institute of Technology |
| Date | 2010-09-05 |
| Paper # | PRMU2010-60,IBISML2010-32 |
| Volume (vol) | vol.110 |
| Number (no) | 187 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |