Method operator()

dlib/svm/sparse_kernel.h:37–44

        const scalar_type gamma;

        scalar_type operator() (
            const sample_type& a,
            const sample_type& b
        ) const
        { 
            const scalar_type d = distance_squared(a,b);
            return std::exp(-gamma*d);
        }

        sparse_radial_basis_kernel& operator= (
            const sparse_radial_basis_kernel& k