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» Complexities for generalized models of self-assembly
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ICDE
2006
IEEE
213views Database» more  ICDE 2006»
15 years 10 months ago
Optimization of Complex Nested Queries in Relational Databases
Due to the flexible structures of SQL, no general approach works efficiently for all kinds of queries. Some special kinds of queries can be further optimized for better performa...
Bin Cao
AI
2005
Springer
15 years 4 months ago
Knowledge updates: Semantics and complexity issues
We consider the problem of how an agent's knowledge can be updated. We propose a formal method of knowledge update on the basis of the semantics of modal logic S5. In our met...
Chitta Baral, Yan Zhang
SIGMOD
2010
ACM
249views Database» more  SIGMOD 2010»
15 years 4 months ago
Worry-free database upgrades: automated model-driven evolution of schemas and complex mappings
Schema evolution is an unavoidable consequence of the application development lifecycle. The two primary schemas in an application, the client conceptual object model and the pers...
James F. Terwilliger, Philip A. Bernstein, Adi Unn...
MOBIHOC
2006
ACM
16 years 3 months ago
Topology control meets SINR: : the scheduling complexity of arbitrary topologies
To date, topology control in wireless ad hoc and sensor networks--the study of how to compute from the given communication network a subgraph with certain beneficial properties--h...
Thomas Moscibroda, Roger Wattenhofer, Aaron Zollin...
NIPS
1998
15 years 5 months ago
Controlling the Complexity of HMM Systems by Regularization
This paper introduces a method for regularization of HMM systems that avoids parameter overfitting caused by insufficient training data. Regularization is done by augmenting the E...
Christoph Neukirchen, Gerhard Rigoll