VLDB - Web II Focused Crawling Using Context Graphs Michelangelo Diligenti Frans Coetzee Steve Lawrence C. Lee Giles Marco Gori Approximating Aggregate Queries about Web Pages via Random Walks Ziv Bar-Yossef Alexander Berg Steve Chien Jittat Fakcharoenphol Dror Weitz Computing Geographical Scopes of Web Resources Junyan Ding Luis Gravano Narayanan Shivakumar Return to VLDB session listing DiSC'01 Copyright ©2002 ACM Inc.