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Strict and Tolerant Antidivision Queries with Ordinal Layered Preferences by Patrick Bosc; Olivier Pivert; Olivier Soufflet is a Computer Science article available to read on EtoBox.

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In this paper, we are interested in taking preferences into account for a family of queries inspired by the antidivision. An antidivision query aims at retrieving the elements associated with none of the elements of a specified set of values. We suggest the introduction of preferences inside such queries with the following specificities: (i) the user gives his/her preferences in an ordinal way and (ii) the preferences apply to the divisor which is defined as a hierarchy of sets. Different uses of the hierarchy are investigated, which leads to queries conveying different semantics and the property of the result delivered is characterized. Furthermore, the case where a conjunctive stratified antidivision query returns an empty set of answers is dealt with, and an approach aimed at relaxing such queries is proposed.

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Author

Patrick Bosc; Olivier Pivert; Olivier Soufflet

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0888-613X)

Published

2011

Language

EN

Field

Computer Science (Physical Sciences)