605 search results - page 57 / 121 » Aggregate Functions in DLV |
SIGMOD
2006
ACM
14 years 8 months ago
2006
ACM
We study the problem of finding efficient equivalent viewbased rewritings of relational queries, focusing on query optimization using materialized views under the assumption that ...
AMMA
2009
Springer
14 years 3 months ago
2009
Springer
Abstract. We present Turing Trade, a web-based game that is a hybrid of a Turing test and a prediction market. In this game, there is a mystery conversation partner, the “target,...
INFOCOM
2006
IEEE
14 years 2 months ago
2006
IEEE
— A key function for network traffic monitoring and analysis is the ability to perform aggregate queries over multiple data streams. Change detection is an important primitive w...
SIGMOD
1997
ACM
14 years 27 days ago
1997
ACM
Data warehouses contain large amounts of information, often collected from a variety of independent sources. Decision-support functions in a warehouse, such as on-line analytical ...
ICPR
2008
IEEE
14 years 10 months ago
2008
IEEE
This paper presents a novel method for medical image signal fusion using complex-valued wavelets to enhance the information content in the fused signal from a perceptual manner. T...