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» The Constellation Query Language
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MOBISYS
2008
ACM
14 years 8 months ago
Cascadia: a system for specifying, detecting, and managing rfid events
Cascadia is a system that provides RFID-based pervasive computing applications with an infrastructure for specifying, extracting and managing meaningful high-level events from raw...
Evan Welbourne, Nodira Khoussainova, Julie Letchne...
CCS
2005
ACM
14 years 2 months ago
CPOL: high-performance policy evaluation
Policy enforcement is an integral part of many applications. Policies are often used to control access to sensitive information. Current policy specification languages give users ...
Kevin Borders, Xin Zhao, Atul Prakash
SEMWEB
2004
Springer
14 years 2 months ago
Dynamic Agent Composition from Semantic Web Services
Abstract. The shift from Web pages to Web services enables programmatic access to the near limitless information on the World Wide Web. Autonomous agents should generate concise an...
Michael Czajkowski, Anna L. Buczak, Martin O. Hofm...
PODS
1994
ACM
138views Database» more  PODS 1994»
14 years 25 days ago
Dyn-FO: A Parallel, Dynamic Complexity Class
Traditionally, computational complexity has considered only static problems. Classical Complexity Classes such as NC, P, and NP are de ned in terms of the complexity of checking {...
Sushant Patnaik, Neil Immerman
SIGMOD
1995
ACM
116views Database» more  SIGMOD 1995»
14 years 9 days ago
Incremental Maintenance of Views with Duplicates
We study the problem of e cient maintenance of materialized views that may contain duplicates. This problem is particularly important when queries against such views involve aggre...
Timothy Griffin, Leonid Libkin