Spherical Random Features for Polynomial Kernels

NeurIPS 2015 Jeffrey PenningtonFelix Xinnan X. YuSanjiv Kumar

Compact explicit feature maps provide a practical framework to scale kernel methods to large-scale learning, but deriving such maps for many types of kernels remains a challenging open problem. Among the commonly used kernels for nonlinear classification are polynomial kernels, for which low approximation error has thus far necessitated explicit feature maps of large dimensionality, especially for higher-order polynomials... (read more)

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