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Titolo:
Modeling the retrieval process for an information retrieval system using an ordinal fuzzy linguistic approach
Autore:
Herrera-Viedma, E;
Indirizzi:
Univ Granada, Fac Bibliotecon & Documentac, Dept Comp Sci & AI, Granada 18071, Spain Univ Granada Granada Spain 18071 ept Comp Sci & AI, Granada 18071, Spain
Titolo Testata:
JOURNAL OF THE AMERICAN SOCIETY FOR INFORMATION SCIENCE AND TECHNOLOGY
fascicolo: 6, volume: 52, anno: 2001,
pagine: 460 - 475
SICI:
1532-2882(200104)52:6<460:MTRPFA>2.0.ZU;2-F
Fonte:
ISI
Lingua:
ENG
Soggetto:
GROUP DECISION-MAKING; DOCUMENT-RETRIEVAL; OWA OPERATORS; AGGREGATION OPERATORS; WEIGHTED QUERIES; CONSENSUS; LABELS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Social & Behavioral Sciences
Citazioni:
51
Recensione:
Indirizzi per estratti:
Indirizzo: Herrera-Viedma, E Univ Granada, Fac Bibliotecon & Documentac, Dept Comp Sci & AI, Granada 18071, Spain Univ Granada Granada Spain 18071 Granada 18071, Spain
Citazione:
E. Herrera-Viedma, "Modeling the retrieval process for an information retrieval system using an ordinal fuzzy linguistic approach", J AM SOC IN, 52(6), 2001, pp. 460-475

Abstract

A linguistic model for an Information Retrieval System (IRS) defined usingan ordinal fuzzy linguistic approach is proposed. The ordinal fuzzy linguistic approach is presented, and its use for modeling the imprecision and subjectivity that appear in the user-IRS interaction is studied. The user queries and IRS responses are modeled linguistically using the concept of fuzzy linguistic variables. The system accepts Boolean queries whose terms can be weighted simultaneously by means of ordinal linguistic values according to three possible semantics: a symmetrical threshold semantic, a quantitative semantic, and an importance semantic. The first one identifies a new threshold semantic used to express qualitative restrictions on the documents retrieved for a given term. It is monotone increasing in index term weight for the threshold values that are on the right of the mid-value, and decreasing for the threshold values that are on the left of the mid-value. The second one is a new semantic proposal introduced to express quantitative restrictions on the documents retrieved for a term, i.e., restrictions on the number of documents that must be retrieved containing that term. The last oneis the usual semantic of relative importance that has an effect when the term is in a Boolean expression. A bottom-up evaluation mechanism of queriesis presented that coherently integrates the use of the three semantics andsatisfies the separability property. The advantage of this IRS with respect to others is that users can express linguistically different semantic restrictions on the desired documents simultaneously, incorporating more flexibility in the user-IRS interaction.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/03/20 alle ore 09:28:08