1418 search results - page 236 / 284 » A Theory of Stream Queries |
PODS
2008
ACM
14 years 9 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...
EDBT
2008
ACM
14 years 9 months ago
2008
ACM
The spatial and temporal databases have been studied widely and intensively over years. In this paper, we study how to answer queries of finding the best departure time that minim...
WSDM
2009
ACM
14 years 3 months ago
2009
ACM
There has been considerable past work on efficiently computing top k objects by aggregating information from multiple ranked lists of these objects. An important instance of this...
ATAL
2007
Springer
14 years 3 months ago
2007
Springer
In this paper we consider the problem of eCommerce comparison shopping agents (shopbots) that are limited by capacity constraints. In light of the phenomenal increase both in dema...
CLEF
2007
Springer
14 years 3 months ago
2007
Springer
This paper presents the LIG contribution to the CLEF 2007 medical retrieval task (i.e. ImageCLEFmed). The main idea in this paper is to incorporate medical knowledge in the langua...