Hash Kernels for Structured Data,
Qinfeng Shi, James Petterson, Gideon Dror, John Langford, Alex Smola and Vishy Vishwanathan
Journal of Machine Learning Research
We propose hashing to facilitate efficient kernels. This generalizes previous work using sampling
and we show a principled way to compute the kernel matrix for data streams and sparse feature
spaces. Moreover, we give deviation bounds from the exact kernel matrix. This has applications to
estimation on strings and graphs.