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» Optimization strategies for complex queries
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DSN
2009
IEEE
15 years 4 months ago
A QoS-aware fault tolerant middleware for dependable service composition
Based on the framework of service-oriented architecture (SOA), complex distributed systems can be dynamically and automatically composed by integrating distributed Web services pr...
Zibin Zheng, Michael R. Lyu
SIGDIAL
2010
14 years 7 months ago
Sparse Approximate Dynamic Programming for Dialog Management
Spoken dialogue management strategy optimization by means of Reinforcement Learning (RL) is now part of the state of the art. Yet, there is still a clear mismatch between the comp...
Senthilkumar Chandramohan, Matthieu Geist, Olivier...
VLDB
1997
ACM
97views Database» more  VLDB 1997»
15 years 2 months ago
The Complexity of Transformation-Based Join Enumeration
Query optimizers that explore a search space exhaustively using transformation rules usually apply all possible rules on each alternative, and stop when no new information is prod...
Arjan Pellenkoft, César A. Galindo-Legaria,...
EDBT
2010
ACM
202views Database» more  EDBT 2010»
15 years 4 months ago
Querying trajectories using flexible patterns
The wide adaptation of GPS and cellular technologies has created many applications that collect and maintain large repositories of data in the form of trajectories. Previous work ...
Marcos R. Vieira, Petko Bakalov, Vassilis J. Tsotr...
PARLE
1992
15 years 1 months ago
Performance Evaluation of Parallel Transaction Processing in Shared Nothing Database Systems
Complex and data-intensive database queries mandate parallel processing strategies to achieve sufficiently short response times. In praxis, parallel database processing is mostly b...
Robert Marek, Erhard Rahm