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VLDB
2007
ACM
114views Database» more  VLDB 2007»
16 years 6 months ago
Optimization and evaluation of shortest path queries
We investigate the problem of how to evaluate efficiently a collection of shortest path queries on massive graphs that are too big to fit in the main memory. To evaluate a shortes...
Edward P. F. Chan, Heechul Lim
SIGMOD
2001
ACM
90views Database» more  SIGMOD 2001»
16 years 6 months ago
Towards Knowledge-Based Digital Libraries
From the standpoint of satisfying human's informationneeds, the current digital library (DL) systems suffer from the following two shortcomings: (i) inadequate high-level cog...
Ling Feng, Manfred A. Jeusfeld, Jeroen Hoppenbrouw...
PODS
2005
ACM
115views Database» more  PODS 2005»
16 years 6 months ago
A divide-and-merge methodology for clustering
We present a divide-and-merge methodology for clustering a set of objects that combines a top-down "divide" phase with a bottom-up "merge" phase. In contrast, ...
David Cheng, Santosh Vempala, Ravi Kannan, Grant W...
EDBT
2006
ACM
137views Database» more  EDBT 2006»
16 years 6 months ago
IQN Routing: Integrating Quality and Novelty in P2P Querying and Ranking
Abstract. We consider a collaboration of peers autonomously crawling the Web. A pivotal issue when designing a peer-to-peer (P2P) Web search engine in this environment is query rou...
Sebastian Michel, Matthias Bender, Peter Triantafi...
EDBT
2008
ACM
194views Database» more  EDBT 2008»
16 years 6 months ago
XCraft: boosting the performance of active XML materialization
An active XML (AXML) document contains tags representing calls to Web services. Therefore, retrieving its contents consists in materializing its data elements by invoking the embe...
Gabriela Ruberg, Marta Mattoso