The MObile Teamwork Infrastructure for Organizations Networking (MOTION) 1 service platform that we have designed and implemented addresses an emerging requirement in the daily bu...
Pascal Fenkam, Engin Kirda, Schahram Dustdar, Hara...
Search engines process queries conjunctively to restrict the size of the answer set. Further, it is not rare to observe a mismatch between the vocabulary used in the text of Web p...
In recent years, several methods have been proposed for implementing interactive similarity queries on multimedia databases. Common to all these methods is the idea to exploit use...
We study the specification of access control policy in large-scale distributed systems. Our work on real-world policies has shown that standard policy idioms such as role hierarc...
Estimation via sampling out of highly selective join queries is well known to be problematic, most notably in online aggregation. Without goal-directed sampling strategies, samples...