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VLDB
1990
ACM
106views Database» more  VLDB 1990»
13 years 11 months ago
The Time Index: An Access Structure for Temporal Data
In this paper, we describe a new indexing technique, the time indez, for improving the performance of certain classes of temporal queries. The time index can be used to retrieve v...
Ramez Elmasri, Gene T. J. Wuu, Yeong-Joon Kim
PVLDB
2008
126views more  PVLDB 2008»
13 years 6 months ago
Parallelizing query optimization
Many commercial RDBMSs employ cost-based query optimization exploiting dynamic programming (DP) to efficiently generate the optimal query execution plan. However, optimization tim...
Wook-Shin Han, Wooseong Kwak, Jinsoo Lee, Guy M. L...
CGF
2008
150views more  CGF 2008»
13 years 7 months ago
Compact, Fast and Robust Grids for Ray Tracing
The focus of research in acceleration structures for ray tracing recently shifted from render time to time to image, the sum of build time and render time, and also the memory foo...
Ares Lagae, Philip Dutré
PCI
2005
Springer
14 years 26 days ago
Storing and Locating Mutable Data in Structured Peer-to-Peer Overlay Networks
Structured peer-to-peer overlay networks or Distributed Hash Tables (DHTs) are distributed systems optimized for storage and retrieval of read-only data. In this paper we elaborate...
Antony Chazapis, Nectarios Koziris
AI
2008
Springer
13 years 7 months ago
Semiring induced valuation algebras: Exact and approximate local computation algorithms
Local computation in join trees or acyclic hypertrees has been shown to be linked to a particular algebraic structure, called valuation algebra. There are many models of this alge...
Jürg Kohlas, Nic Wilson