/usr/include/shark/Models/Kernels/ is in libshark-dev 3.0.1+ds1-2ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/shark/Models/Kernels/AbstractKernelFunction.h
/usr/include/shark/Models/Kernels/AbstractMetric.h
/usr/include/shark/Models/Kernels/ArdKernel.h
/usr/include/shark/Models/Kernels/CSvmDerivative.h
/usr/include/shark/Models/Kernels/DiscreteKernel.h
/usr/include/shark/Models/Kernels/EvalSkipMissingFeatures.h
/usr/include/shark/Models/Kernels/GaussianRbfKernel.h
/usr/include/shark/Models/Kernels/Impl/
/usr/include/shark/Models/Kernels/Impl/MklKernelBase.h
/usr/include/shark/Models/Kernels/KernelExpansion.h
/usr/include/shark/Models/Kernels/KernelHelpers.h
/usr/include/shark/Models/Kernels/LinearKernel.h
/usr/include/shark/Models/Kernels/MissingFeaturesKernelExpansion.h
/usr/include/shark/Models/Kernels/MklKernel.h
/usr/include/shark/Models/Kernels/ModelKernel.h
/usr/include/shark/Models/Kernels/MonomialKernel.h
/usr/include/shark/Models/Kernels/MultiTaskKernel.h
/usr/include/shark/Models/Kernels/NormalizedKernel.h
/usr/include/shark/Models/Kernels/PolynomialKernel.h
/usr/include/shark/Models/Kernels/ProductKernel.h
/usr/include/shark/Models/Kernels/ScaledKernel.h
/usr/include/shark/Models/Kernels/SubrangeKernel.h
/usr/include/shark/Models/Kernels/WeightedSumKernel.h