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» Answering Aggregation Queries in a Secure System Model
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CIKM
2003
Springer
14 years 23 days ago
Automated index management for distributed web search
Distributed heterogeneous search systems are an emerging phenomenon in Web search, in which independent topic-specific search engines provide search services, and metasearchers d...
Rinat Khoussainov, Nicholas Kushmerick
ICPR
2002
IEEE
14 years 8 months ago
Hierarchical Monitoring of People's Behaviors in Complex Environments Using Multiple Cameras
We present a distributed, surveillance system that works in large and complex indoor environments. To track and recognize behaviors of people, we propose the use of the Hidden Mar...
Nam Thanh Nguyen, Svetha Venkatesh, Geoff A. W. We...
SIGIR
2009
ACM
14 years 2 months ago
Risky business: modeling and exploiting uncertainty in information retrieval
Most retrieval models estimate the relevance of each document to a query and rank the documents accordingly. However, such an approach ignores the uncertainty associated with the ...
Jianhan Zhu, Jun Wang, Ingemar J. Cox, Michael J. ...
COMPSAC
2010
IEEE
13 years 5 months ago
Representing and Reasoning about Web Access Control Policies
The advent of emerging technologies such as Web services, service-oriented architecture, and cloud computing has enabled us to perform business services more efficiently and effect...
Gail-Joon Ahn, Hongxin Hu, Joohyung Lee, Yunsong M...
ICDE
2010
IEEE
189views Database» more  ICDE 2010»
13 years 7 months ago
Caching all plans with just one optimizer call
Abstract— Modern database management systems (DBMS) answer a multitude of complex queries on increasingly larger datasets. Given the complexities of the queries and the numerous ...
Debabrata Dash, Ioannis Alagiannis, Cristina Maier...