Kernels

ConstantCorrelation()	Return a constant 1.0 correlation callable.
RaggedTimeDecay(time_dim, scale[, decay_func])	Create a ragged temporal decay kernel.
GridTimeDecay(scale[, decay_func])	Create a grid temporal decay kernel.
GridSpatialDecay(lat_dim, lon_dim, scale[, ...])	Create a grid spatial decay kernel (Haversine).