  This paper proposes a model reduction approach for simplifying the
interconnection topology of Lur'e network systems. A class of reduced-order
models are generated by the projection framework based on graph clustering,
which not only preserve the network structure but also ensure absolute
stability. Furthermore, we provide an upper bound on the input-output
approximation error between the original and reduced-order Lur'e network
systems, which is expressed as a function of the characteristic matrix of graph
clustering. Finally, the results are illustrated via a numerical example.
