53 search results - page 10 / 11 » Optimizing joins in a map-reduce environment |
VLDB
2005
ACM
13 years 10 months ago
2005
ACM
Developing cost models for query optimization is significantly harder for XML queries than for traditional relational queries. The reason is that XML query operators are much mor...
ATAL
2003
Springer
13 years 10 months ago
2003
Springer
A collective of agents often needs to maximize a “world utility” function which rates the performance of an entire system, while subject to communication restrictions among th...
PE
2002
Springer
13 years 5 months ago
2002
Springer
Many emerging mobile wireless applications depend upon secure group communications, in which data is encrypted and the group's data encryption key is changed whenever a membe...
IPPS
2009
IEEE
13 years 12 months ago
2009
IEEE
Modeling communications in wireless networks is a challenging task since it asks for a simple mathematical object on which efficient algorithms can be designed, but that must also...
P2P
2005
IEEE
13 years 11 months ago
2005
IEEE
Structured peer-to-peer overlay networks are now an established paradigm for implementing a wide range of distributed services. While the problem of maintaining these networks in ...