522 search results - page 52 / 105 » Answering Aggregation Queries in a Secure System Model |
GIS
2010
ACM
13 years 6 months ago
2010
ACM
This paper proposes an efficient, decentralized algorithm for determining the topological relationship between two regions monitored by a geosensor network. Many centralized algo...
CCS
2008
ACM
13 years 9 months ago
2008
ACM
Pervasive computing environments have created a requirement for spatial- and temporal-aware access control systems. Although temporal, spatial and spatio-temporal role-based acces...
ICDE
2000
IEEE
13 years 11 months ago
2000
IEEE
Increasing application demands are pushing database management systems (DBMSs) towards providing adequate and efficient support for content-based retrieval over multimedia objects...
ISR
2011
13 years 2 months ago
2011
Initially popularized by Amazon.com, recommendation technologies have become widespread over the past several years. However, the types of recommendations available to the users i...
PE
2008
Springer
13 years 7 months ago
2008
Springer
Ratings (also known as recommendations) provide an efficient and effective way to build trust relationship in the human society, by making use of the information from others rathe...