%X This paper studies stochastic graph models of the WebGraph. We present a new model that describes the WebGraph as an ensemble of different regions generated by independent stochastic processes (in the spirit of a recent paper by Dill et al. [VLDB 2001]). Models such as the Copying Model [17] and Evolving Networks Model [3] are simulated and compared on several relevant measures such as degree and clique distribution. %D 2002 %C Honolulu, Hawaii %T Multi-layer model for the web graph %L eprints1136 %A Luigi Laura %A Stefano Leonardi %A Guido Caldarelli %A Paolo De Los Rios