Multi-layer Boosting for Pattern Recognition
| Type of publication: | Idiap-RR |
| Citation: | Fleuret_Idiap-RR-76-2008 |
| Number: | Idiap-RR-76-2008 |
| Year: | 2008 |
| Month: | 12 |
| Institution: | Idiap |
| Abstract: | We extend the standard boosting procedure to train a two-layer classifier dedicated to handwritten character recognition. The scheme we propose relies on a hidden layer which extracts feature vectors on a fixed number of points of interest, and an output layer which combines those feature vectors and the point of interest locations into a final classification decision. Our main contribution is to show that the classical AdaBoost procedure can be extended to train such a multi-layered structure by propagating the error through the output layer. Such an extension allows for the selection of optimal weak learners by minimizing a weighted error, in both the output layer and the hidden layer. We provide experimental results on the MNIST database and compare to a classical unsupervised EM-based feature extraction. |
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| Projects: |
Idiap IM2 |
| Authors: | |
| Crossref by |
Fleuret_PRL_2008 |
| Added by: | [ADM] |
| Total mark: | 0 |
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