118 search results - page 21 / 24 » Complexity Cores and Hard Problem Instances |
ICDE
2010
IEEE
14 years 7 months ago
2010
IEEE
Scientific workflows are increasingly used for rapid integration of existing algorithms to form larger and more comgrams. Such workflows promise to provide more abstract, yet execu...
WAN
1998
Springer
13 years 11 months ago
1998
Springer
In this paper the Northrhine-Westphalian metacomputing initiative is described. We start by discussing various general aspects of metacomputing and explain the reasons for founding...
CP
2001
Springer
13 years 12 months ago
2001
Springer
Abstract. This paper contains an experimental study of the impact of the construction strategy of reduced, ordered binary decision diagrams (ROBDDs) on the average-case computation...
ICDT
2012
ACM
11 years 9 months ago
2012
ACM
A universal model of a database D and a set Σ of integrity constraints is a database that extends D, satisfies Σ, and is most general in the sense that it contains sound and co...
PODS
2008
ACM
14 years 7 months ago
2008
ACM
In the study of data exchange one usually assumes an openworld semantics, making it possible to extend instances of target schemas. An alternative closed-world semantics only move...