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WWW
2004
ACM
16 years 16 days ago
A hybrid approach for searching in the semantic web
This paper presents a search architecture that combines classical search techniques with spread activation techniques applied to a semantic model of a given domain. Given an ontol...
Cristiano Rocha, Daniel Schwabe, Marcus Poggi de A...
OSDI
2008
ACM
16 years 5 days ago
Live Migration of Direct-Access Devices
Virtual machine migration greatly aids management by allowing flexible provisioning of resources and decommissioning of hardware for maintenance. However, efforts to improve netwo...
Asim Kadav, Michael M. Swift
VLDB
2006
ACM
207views Database» more  VLDB 2006»
16 years 3 days ago
Modeling and querying moving objects in networks
: Moving Objects Databases have become an important research issue in recent years. For and querying moving objects, there exists a comprehensive framework of abstract data types t...
Ralf Hartmut Güting, Victor Teixeira de Almeida, ...
VLDB
2007
ACM
179views Database» more  VLDB 2007»
16 years 3 days ago
Mining Approximate Top-K Subspace Anomalies in Multi-Dimensional Time-Series Data
Market analysis is a representative data analysis process with many applications. In such an analysis, critical numerical measures, such as profit and sales, fluctuate over time a...
Xiaolei Li, Jiawei Han
SIGMOD
2002
ACM
120views Database» more  SIGMOD 2002»
16 years 16 hour ago
Exploiting statistics on query expressions for optimization
Statistics play an important role in influencing the plans produced by a query optimizer. Traditionally, optimizers use statistics built over base tables and assume independence b...
Nicolas Bruno, Surajit Chaudhuri