320 search results - page 52 / 64 » A Theory of Spatio-Temporal Database Queries |
PODS
2007
ACM
14 years 7 months ago
2007
ACM
The pebble tree automaton and the pebble tree transducer are enhanced by additionally allowing an unbounded number of `invisible' pebbles (as opposed to the usual `visible�...
CIKM
2009
Springer
14 years 2 months ago
2009
Springer
On photo sharing websites like Flickr and Zooomr, users are offered the possibility to assign tags to their uploaded pictures. Using these tags to find interesting groups of sem...
ICDE
2007
IEEE
14 years 9 months ago
2007
IEEE
To access data sources on the Web, a crucial step is wrapping, which translates query responses, rendered in textual HTML, back into their relational form. Traditionally, this pro...
PODS
2011
ACM
12 years 10 months ago
2011
ACM
In the traditional data exchange setting, source instances are restricted to be complete in the sense that every fact is either true or false in these instances. Although natural ...
ATAL
2007
Springer
13 years 11 months ago
2007
Springer
This paper studies a logical framework for automated negotiation between two agents. We suppose an agent who has a knowledge base represented by a logic program. Then, we introduc...