Sciweavers

51 search results - page 7 / 11
» Computing consistent query answers using conflict hypergraph...
Sort
View
IDEAS
2003
IEEE
122views Database» more  IDEAS 2003»
14 years 20 days ago
Preferred Repairs for Inconsistent Databases
The objective of this paper is to investigate the problems related to the extensional integration of information sources. In particular, we propose an approach for managing incons...
Sergio Greco, Cristina Sirangelo, Irina Trubitsyna...
ICDT
2012
ACM
242views Database» more  ICDT 2012»
11 years 9 months ago
Win-move is coordination-free (sometimes)
In a recent paper by Hellerstein [15], a tight relationship was conjectured between the number of strata of a Datalog¬ program and the number of “coordination stages” require...
Daniel Zinn, Todd J. Green, Bertram Ludäscher
DEXA
2007
Springer
107views Database» more  DEXA 2007»
13 years 11 months ago
When Mobile Objects' Energy Is Not So Tight: A New Perspective on Scalability Issues of Continuous Spatial Query Systems
The two dominant costs in continuous spatial query systems are the wireless communication cost for location update, and the evaluation cost for query processing. Existing works add...
Tai T. Do, Fuyu Liu, Kien A. Hua
IS
2006
13 years 7 months ago
Processing approximate aggregate queries in wireless sensor networks
In-network data aggregation has been recently proposed as an effective means to reduce the number of messages exchanged in wireless sensor networks. Nodes of the network form an a...
Antonios Deligiannakis, Yannis Kotidis, Nick Rouss...
AMSTERDAM
2009
13 years 5 months ago
The Data Complexity of the Syllogistic Fragments of English
Abstract. Pratt and Third's syllogistic fragments of English can be used to capture, in addition to syllogistic reasoning, many other kinds of common sense reasoning, and, in ...
Camilo Thorne, Diego Calvanese