651 search results - page 76 / 131 » Algebraic Query Optimization for Distributed Top-k Queries |
ICDCSW
2007
IEEE
14 years 3 months ago
2007
IEEE
Complex event processing has become increasingly important in modern applications, ranging from supply chain management for RFID tracking to real-time intrusion detection. The goa...
VLDB
2004
ACM
14 years 2 months ago
2004
ACM
We consider the problem of resource sharing when processing large numbers of continuous queries. We specifically address sliding-window aggregates over data streams, an important...
VLDB
2007
ACM
14 years 9 months ago
2007
ACM
In distributed stream processing environments, large numbers of continuous queries are distributed onto multiple servers. When one or more of these servers become overloaded due t...
SIGIR
2010
ACM
13 years 3 months ago
2010
ACM
The size of the Web as well as user bases of search systems continue to grow exponentially. Consequently, providing subsecond query response times and high query throughput become...
JACM
2012
11 years 11 months ago
2012
A fundamental problem in data management is to draw and maintain a sample of a large data set, for approximate query answering, selectivity estimation, and query planning. With la...