67 search results - page 9 / 14 » Arity-Monotonic Extended Aggregation Operators |
MOBISYS
2007
ACM
14 years 7 months ago
2007
ACM
The ease of deployment of battery-powered and mobile systems is pushing the network edge far from powered infrastructures. A primary challenge in building untethered systems is of...
SC
2005
ACM
14 years 1 months ago
2005
ACM
This paper presents program transformations directed toward improving communication-computation overlap in parallel programs that use MPI’s collective operations. Our transforma...
VLDB
1987
ACM
13 years 11 months ago
1987
ACM
The design of the POSTGRES data model is described. The data model is a relational model that has been extended with abstract data types including user-defined operators and proce...
VLDB
1990
ACM
13 years 11 months ago
1990
ACM
In this paper, we describe a new indexing technique, the time indez, for improving the performance of certain classes of temporal queries. The time index can be used to retrieve v...
SIGMOD
2007
ACM
14 years 7 months ago
2007
ACM
SwissQM is a novel sensor network platform for acquiring data from the real world. Instead of statically hand-crafted programs, SwissQM is a virtual machine capable of executing b...