902 search results - page 84 / 181 » Efficient and Extensible Algorithms for Multi Query Optimiza... |
105
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GLOBECOM
2009
IEEE
15 years 6 months ago
2009
IEEE
We study the joint allocation of three types of resources, namely, power, subcarriers and relay nodes, in cooperative two-hop multi-relay OFDM systems. Each relay adopts the amplif...
127
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WWW
2007
ACM
16 years 3 months ago
2007
ACM
As XML database sizes grow, the amount of space used for storing the data and auxiliary data structures becomes a major factor in query and update performance. This paper presents...
228
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ICDE
2006
IEEE
16 years 4 months ago
2006
IEEE
Skyline queries are well suited when retrieving data according to multiple criteria. While most previous work has assumed a centralized setting this paper considers skyline queryi...
176
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JSW
2008
15 years 2 months ago
2008
In a mobile computing system, users carrying portable devices can access database services from any location without requiring a fixed position in the networking environment. Some ...
161
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VLDB
2002
ACM
15 years 2 months ago
2002
ACM
In spite of the many decades of progress in database research, surprisingly scientists in the life sciences community still struggle with inefficient and awkward tools for queryin...