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TALG
2010
13 years 8 months ago
2010
We introduce a facility location problem with submodular facility cost functions, and give an O(log n) approximation algorithm for it. Then we focus on a special case of submodula...
ACNS
2010
Springer
14 years 1 months ago
2010
Springer
Abstract. Web advertisers prefer the cost-per-action (CPA) advertisement model whereby an advertiser pays a web publisher according to the actual amount of transactions, rather tha...
ICSAP
2010
13 years 7 months ago
2010
Security being the major concern during data transfers, we have various challenges to face. The requirements of the security model vary depending on the type of data to be encrypte...
ZEUS
2010
13 years 11 months ago
2010
When designing a publicly available Web service, a service designer has to take care of costs and revenue caused by this services. In the very beginning possible partners might onl...
DPD
1998
13 years 9 months ago
1998
To meet users’ growing needs for accessing pre-existing heterogeneous databases, a multidatabase system (MDBS) integrating multiple databases has attracted many researchers recen...