67 search results - page 1 / 14 » Arity-Monotonic Extended Aggregation Operators |
IPMU
2010
Springer
13 years 9 months ago
2010
Springer
A class of extended aggregation operators, called impact functions, is proposed and their basic properties are examined. Some important classes of functions like generalized ordere...
AINA
2003
IEEE
14 years 4 months ago
2003
IEEE
The use of mobile applications is increasing rapidly. Particularly, mobile applications for decision support systems, such as mobile datawarehouses, are very attractive. However, ...
PODS
1999
ACM
14 years 3 months ago
1999
ACM
We investigate the problem of how to extend constraint query languages with aggregate operators. We deal with standard relational aggregation, and also with aggregates speci c to ...
NMR
2004
Springer
14 years 4 months ago
2004
Springer
All major semantics of normal logic programs and normal logic programs with aggregates can be described as fixpoints of the one-step provability operator or of operators that can...
VLDB
1991
ACM
14 years 2 months ago
1991
ACM
In this paper we present a technique to optimize queries on deductive databases that use aggregate operations such as min, max, and “largest Ic values.” Our approach is based ...