sklearn.kernel_approximation

Approximate kernel feature maps based on Fourier transforms and count sketches.

User guide. See the Kernel Approximation section for further details.

AdditiveChi2Sampler	Approximate feature map for additive chi2 kernel.
Nystroem	Approximate a kernel map using a subset of the training data.
PolynomialCountSketch	Polynomial kernel approximation via Tensor Sketch.
RBFSampler	Approximate a RBF kernel feature map using random Fourier features.
SkewedChi2Sampler	Approximate feature map for "skewed chi-squared" kernel.