Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/11333
Título: | Integrating incomplete information into the relational data model |
Autor(es): | Ribeiro, Jorge Manuel Ferreira Barbosa Machado, José Manuel Abelha, António Neves, José Fernández-Delgado, Manuel |
Palavras-chave: | Incomplete information Quality-of-Information Decision support systems Relational data model Extended logic programming |
Data: | 2010 |
Editora: | IAENG |
Revista: | Lecture Notes in Engineering and Computer Science |
Citação: | WORLD CONGRESS ON ENGINEERING, London, U.K., 2010 – “World Congress on Engineering 2010”. [S.l. : s.n., 2010]. |
Resumo(s): | Knowledge and belief are generally incomplete, contradictory, or even error sensitive, being desirable to use formal tools to deal with the problems that arise from the use of partial, contradictory, ambiguous, imperfect, nebulous, or missing information. Historically, uncertain reasoning has been associated with probability theory. However, qualitative models and qualitative reasoning have been around in database theory and Artificial Intelligence research for some time, in particular due to the growing need to offer user support in decision making processes. In this paper, and under the umbrella of the Multi-valued Extended Logic Programming formalism to knowledge representation and reasoning, we present an evaluative perspective of such an approach, in order to select the best theories (or logic programs) that model the universe of discourse to solve a problem, in terms of a process of quantification of the quality- of-information that stems out from those theories. Additionally, we present a novel approach to integrate incomplete information into the relational data model, making possible the use of the relational algebra operators and the potential inherent to the Structured Query Languages to present solutions to a particular problem and to measure their degree of self-reliance. |
Tipo: | Artigo em ata de conferência |
URI: | https://hdl.handle.net/1822/11333 |
ISBN: | 9789881701299 |
ISSN: | 2078-0958 |
Arbitragem científica: | yes |
Acesso: | Acesso restrito UMinho |
Aparece nas coleções: | DI/CCTC - Artigos (papers) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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42-WCE-2010-ICCIIS-Londres.pdf Acesso restrito! | 161,89 kB | Adobe PDF | Ver/Abrir |