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EDBT
2010
ACM
185views Database» more  EDBT 2010»
15 years 6 months ago
Optimizing joins in a map-reduce environment
Implementations of map-reduce are being used to perform many operations on very large data. We examine strategies for joining several relations in the map-reduce environment. Our ...
Foto N. Afrati, Jeffrey D. Ullman
CIKM
2006
Springer
15 years 3 months ago
Cache-oblivious nested-loop joins
We propose to adapt the newly emerged cache-oblivious model to relational query processing. Our goal is to automatically achieve an overall performance comparable to that of fine-...
Bingsheng He, Qiong Luo
ICDE
2003
IEEE
114views Database» more  ICDE 2003»
16 years 1 months ago
Ranked Join Indices
A plethora of data sources contain data entities that could be ordered according to a variety of attributes associated with the entities. Such orderings result effectively in a ra...
Panayiotis Tsaparas, Themistoklis Palpanas, Yannis...
CONCURRENCY
2006
148views more  CONCURRENCY 2006»
14 years 11 months ago
An adaptive parallel query processing middleware for the Grid
vices provide an important abstract layer on top of heterogeneous components (hardware and software) that take part into a grid environment. In this scenario, applications, like sc...
Vinícius F. V. da Silva, Márcio L. D...
STACS
2007
Springer
15 years 5 months ago
Pure Stationary Optimal Strategies in Markov Decision Processes
Markov decision processes (MDPs) are controllable discrete event systems with stochastic transitions. Performances of an MDP are evaluated by a payoff function. The controller of ...
Hugo Gimbert