%0 Conference Paper %A Laura, Luigi %A Leonardi, Stefano %A Caldarelli, Guido %A De Los Rios, Paolo %B 2nd International Workshop on Web Dynamics %C Honolulu, Hawaii %D 2002 %F eprints:1136 %T Multi-layer model for the web graph %U http://eprints.imtlucca.it/1136/ %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.