A
Allel Hadjali
Researcher at University of Poitiers
Publications - 147
Citations - 1193
Allel Hadjali is an academic researcher from University of Poitiers. The author has contributed to research in topics: Skyline & Fuzzy logic. The author has an hindex of 19, co-authored 134 publications receiving 1108 citations. Previous affiliations of Allel Hadjali include University of Rennes & Institut de Recherche en Informatique et Systèmes Aléatoires.
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Journal Article
Fuzziness and Uncertainty in Temporal Reasoning
TL;DR: The paper provides a detailed presentation of the calculus of fuzzy Allen relations (including the composition table of these relations), and discusses the patterns for propagating uncertainty about (fuzzy) Allen relations in a possibilistic way.
Journal ArticleDOI
Database preference queries--a possibilistic logic approach with symbolic priorities
TL;DR: A new approach to database preference queries is presented, where preferences are represented in a possibilistic logic manner, using symbolic weights, and refinements of both Pareto ordering and minimum ordering are used.
Book ChapterDOI
Database preferences queries: a possibilistic logic approach with symbolic priorities
TL;DR: A new approach to database preferences queries is presented, where preferences are represented in a possibilistic logic manner, using symbolic weights, which leaves the freedom for the user to not specify any priority among the preferences.
Proceedings ArticleDOI
On the Use of Fuzzy Dominance for Computing Service Skyline Based on QoS
TL;DR: A new concept, called alpha-dominant service skyline, is introduced to address the above issues and a suitable algorithm for computing it efficiently is developed.
Journal ArticleDOI
Empty versus overabundant answers to flexible relational queries
TL;DR: The basic idea behind the solutions proposed consists in modulating the fuzzy conditions involved in the user query by applying appropriate transformations that lead to a relaxation or an intensification of the users' query.