297 search results - page 55 / 60 » Polynomial heuristics for query optimization |
JIIS
2007
13 years 7 months ago
2007
The Internet has instigated a critical need for automated tools that facilitate integrating countless databases. Since non-technical end users are often the ultimate repositories ...
SIGMOD
1998
ACM
13 years 12 months ago
1998
ACM
Semistructured data is characterized by the lack of any fixed and rigid schema, although typically the data hassomeimplicitstructure. While thelack offixedschemamakesextracting ...
WDAS
1998
13 years 9 months ago
1998
Declustering and replication are well known techniques used to improve response time of queries in parallel disk environments. As data replication incurs a penalty for updates, da...
WWW
2004
ACM
14 years 8 months ago
2004
ACM
This paper investigates how the vision of the Semantic Web can be carried over to the realm of email. We introduce a general notion of semantic email, in which an email message co...
TACAS
2007
Springer
14 years 1 months ago
2007
Springer
We study and provide efficient algorithms for multi-objective model checking problems for Markov Decision Processes (MDPs). Given an MDP, M, and given multiple linear-time (ω-regu...