In some cases we do not want to build the kernel matrix explicitely but simply want to evaluate its components when necessary (for example in K * v).
We should have a lazy API (or just rely on an existing one) that basically builds a LazyKernelMatrix containing references to the kernel and the data and implementing getindex(...) appropriately
In some cases we do not want to build the kernel matrix explicitely but simply want to evaluate its components when necessary (for example in
K * v).We should have a lazy API (or just rely on an existing one) that basically builds a
LazyKernelMatrixcontaining references to the kernel and the data and implementinggetindex(...)appropriately