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» Modelling and Using Imperfect Context Information
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AAAI
2006
14 years 11 months ago
Compilation of Query-Rewriting Problems into Tractable Fragments of Propositional Logic
We consider the problem of rewriting a query efficiently using materialized views. In the context of information integration, this problem has received significant attention in th...
Yolifé Arvelo, Blai Bonet, Maria-Esther Vid...
BDA
2001
14 years 11 months ago
Querying RDF Descriptions for Community Web Portals
Community Web Portals (e.g., digital libraries, vertical aggregators, infomediaries) have become quite popular nowadays in supporting specific communities of interest on corporate...
Gregory Karvounarakis, Vassilis Christophides, Dim...
ISMIS
2003
Springer
15 years 2 months ago
NETMARK: A Schema-Less Extension for Relational Databases for Managing Semi-structured Data Dynamically
Object-Relational database management system is an integrated hybrid cooperative approach to combine the best practices of both the relational model utilizing SQL queries and the ...
David A. Maluf, Peter B. Tran
LPNMR
1999
Springer
15 years 2 months ago
On the Role of Negation in Choice Logic Programs
We introduce choice logic programs as negation-free datalog programs that allow rules to have exclusive-only (possibly empty) disjunctions in the head. Such programs naturally mod...
Marina De Vos, Dirk Vermeir
CEC
2011
IEEE
13 years 9 months ago
Towards human-like social multi-agents with memetic automaton
Abstract—Memetics is a new science that has attracted increasing attentions in the recent decades. Beyond the formalism of simple hybrids, adaptive hybrids and memetic algorithms...
Liang Feng, Yew-Soon Ong, Ah-Hwee Tan, Xianshun Ch...