A Cooperative Answering Approach to Fuzzy Preferences Queries in Service Discovery

Liétard, Ludovic; Lemos, Fernando; Bouzeghoub, Mokrane; Rocacher, Daniel; Abbaci, Katia; Grigori, Daniela; Hadjali, Allel

Liétard, Ludovic; Lemos, Fernando; Bouzeghoub, Mokrane; Rocacher, Daniel; Abbaci, Katia; Grigori, Daniela; Hadjali, Allel (2011), A Cooperative Answering Approach to Fuzzy Preferences Queries in Service Discovery, in Christiansen, Henning, Flexible Query Answering Systems, Springer, p. 318-329

Type

Communication / Conférence

Date

2011

Conference title

FQAS 2011

Conference date

2011

Conference city

Ghent

Conference country

Belgique

Book title

Flexible Query Answering Systems

Book author

Christiansen, Henning

Publisher

Springer

ISBN

9783642247637

Number of pages

510

Pages

318-329

Metadata

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Author(s)

Liétard, Ludovic
Lemos, Fernando
Bouzeghoub, Mokrane
Rocacher, Daniel
Abbaci, Katia
Grigori, Daniela
Hadjali, Allel

Abstract (EN)

In this paper, we propose a novel approach for service retrieval that takes into account the service behavior (described as process model) and relies both on preference satisfiability and structural similarity. User query and target process models are represented as annotated graphs, where user preferences on QoS (Quality of Service) attributes (such as response time, availability and throughput) are modelled by means of fuzzy sets. To avoid empty results, a flexible evaluation method based on fuzzy linguistic quantifiers (such as almost all) is introduced. The retrieved results are easily interpreted by the end users thanks to the clear semantics conveyed by that method. Finally, two families of ranking methods are discussed.

Subjects / Keywords

fuzzy preferences; quality of services; service retrieval; Cooperative answering; linguistic quantifiers