Extending databases to precision-controlled retrieval of qualitative information

Victor Polo De Gyves, Adolfo Guzman-Arenas, Serguei Levachkine

Producción científica: Capítulo del libro/informe/acta de congresoContribución a la conferenciarevisión exhaustiva

Resumen

A hierarchy is an arrangement of qualitative values in a tree with certain properties. Hierarchies allow to define the confusion conf(r, s) in using qualitative value r instead of the intended or correct value s. From here, "predicate P holds for object o", written P(o), is generalized to "P holds for o within confusion ε", written Pε(o) . These precision-controlled predicates are useful to retrieve approximate answers, where the error (confusion) is known. The predicates are implemented through an extended SQL that uses confusion to retrieve information from a database. We show how to extend any database for precision-controlled retrieval. Limiting the total error is also useful, and this is achieved by predicate Pε. Examples are given.

Idioma originalInglés
Título de la publicación alojadaAdvanced Distributed Systems - 5th International School and Symposium, ISSADS 2005, Revised Selected Papers
EditorialSpringer Verlag
Páginas21-32
Número de páginas12
ISBN (versión impresa)3540280634, 9783540280637
DOI
EstadoPublicada - 2005
EventoAdvanced Distributed Systems - 5th International School and Symposium, ISSADS 2005, Revised Selected Papers - Guadalajara, México
Duración: 24 ene. 200528 ene. 2005

Serie de la publicación

NombreLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volumen3563 LNCS
ISSN (versión impresa)0302-9743
ISSN (versión digital)1611-3349

Conferencia

ConferenciaAdvanced Distributed Systems - 5th International School and Symposium, ISSADS 2005, Revised Selected Papers
País/TerritorioMéxico
CiudadGuadalajara
Período24/01/0528/01/05

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