Extending databases to precision-controlled retrieval of qualitative information

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

doi:10.1007/11533962_3

Extending databases to precision-controlled retrieval of qualitative information

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

Centro de Investigación en Computación (CIC)

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

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 P_ε(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 P^ε. Examples are given.

Original language	English
Title of host publication	Advanced Distributed Systems - 5th International School and Symposium, ISSADS 2005, Revised Selected Papers
Publisher	Springer Verlag
Pages	21-32
Number of pages	12
ISBN (Print)	3540280634, 9783540280637
DOIs	https://doi.org/10.1007/11533962_3
State	Published - 2005
Event	Advanced Distributed Systems - 5th International School and Symposium, ISSADS 2005, Revised Selected Papers - Guadalajara, Mexico Duration: 24 Jan 2005 → 28 Jan 2005

Publication series

Name	Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume	3563 LNCS
ISSN (Print)	0302-9743
ISSN (Electronic)	1611-3349

Conference

Conference	Advanced Distributed Systems - 5th International School and Symposium, ISSADS 2005, Revised Selected Papers
Country/Territory	Mexico
City	Guadalajara
Period	24/01/05 → 28/01/05

Access to Document

10.1007/11533962_3

Cite this

De Gyves, V. P., Guzman-Arenas, A., & Levachkine, S. (2005). Extending databases to precision-controlled retrieval of qualitative information. In Advanced Distributed Systems - 5th International School and Symposium, ISSADS 2005, Revised Selected Papers (pp. 21-32). (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); Vol. 3563 LNCS). Springer Verlag. https://doi.org/10.1007/11533962_3

De Gyves, Victor Polo ; Guzman-Arenas, Adolfo ; Levachkine, Serguei. / Extending databases to precision-controlled retrieval of qualitative information. Advanced Distributed Systems - 5th International School and Symposium, ISSADS 2005, Revised Selected Papers. Springer Verlag, 2005. pp. 21-32 (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)).

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De Gyves, VP, Guzman-Arenas, A & Levachkine, S 2005, Extending databases to precision-controlled retrieval of qualitative information. in Advanced Distributed Systems - 5th International School and Symposium, ISSADS 2005, Revised Selected Papers. Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), vol. 3563 LNCS, Springer Verlag, pp. 21-32, Advanced Distributed Systems - 5th International School and Symposium, ISSADS 2005, Revised Selected Papers, Guadalajara, Mexico, 24/01/05. https://doi.org/10.1007/11533962_3

Extending databases to precision-controlled retrieval of qualitative information. / De Gyves, Victor Polo; Guzman-Arenas, Adolfo; Levachkine, Serguei.
Advanced Distributed Systems - 5th International School and Symposium, ISSADS 2005, Revised Selected Papers. Springer Verlag, 2005. p. 21-32 (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); Vol. 3563 LNCS).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AB - 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.

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De Gyves VP, Guzman-Arenas A, Levachkine S. Extending databases to precision-controlled retrieval of qualitative information. In Advanced Distributed Systems - 5th International School and Symposium, ISSADS 2005, Revised Selected Papers. Springer Verlag. 2005. p. 21-32. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)). doi: 10.1007/11533962_3

Extending databases to precision-controlled retrieval of qualitative information

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