CANCELLED: Local Deep Kernel Learning for Efficient Non-linear SVM Prediction
- đ¤ Speaker: Manik Varma (Microsoft Research India) đ Website
- đ Date & Time: Friday 27 September 2013, 11:00 - 12:00
- đ Venue: Engineering Department, CBL Room BE-438
Abstract
THIS TALK HAS BEEN CANCELLED : Our objective is to speed up non-linear SVM prediction while maintaining classification accuracy above an acceptable limit. We generalize Localized Multiple Kernel Learning so as to learn a tree-based primal feature embedding which is high dimensional and sparse. Primal based classification decouples prediction costs from the number of support vectors and our tree-structured features efficiently encode non-linearities while speeding up prediction exponentially over the state-of-the-art. We develop routines for optimizing over the space of tree-structured features and efficiently scale to problems with more than half a million training points. Experiments on benchmark data sets reveal that our formulation can reduce prediction costs by more than three orders of magnitude in some cases with a moderate sacrifice in classification accuracy as compared to RBF -SVMs. Furthermore, our formulation leads to better classification accuracies over leading methods.
Series This talk is part of the Machine Learning @ CUED series.
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Friday 27 September 2013, 11:00-12:00