  In this paper, we develop a signal processing framework of a network without
explicit knowledge of the network topology. Instead, we make use of knowledge
on the distribution of operators on the network. This makes the framework
flexible and useful when accurate knowledge of graph topology is unavailable.
Moreover, the usual graph signal processing is a special case of our framework
by using the delta distribution. The main elements of the theory include
Fourier transform, theory of filtering and sampling.
