Data Science, Kernel Trick, Nonlinear Models, Machine Learning, Data Transformation.
chosen, so that 𝑑≤𝑘<𝑛. Mapping samples to approximated kernel-space For some reason like the visualization of the data or the application of models that can’t directly use kernels, it might be useful to explicitly have access to Φ. For this objective, we can modify the Nyström formula to have an