Journal
FUZZY SETS AND SYSTEMS
Volume 160, Issue 15, Pages 2192-2205Publisher
ELSEVIER
DOI: 10.1016/j.fss.2009.02.013
Keywords
Information retrieval systems; Genetic programming; Inductive query by example; Multi-objective evolutionary algorithms; Query learning
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The performance of information retrieval systems (IRSs) is Usually measured using two different criteria, precision and recall. Precision is the ratio of the relevant documents retrieved by the IRS in response to a user's query to the total number of documents retrieved, whilst recall is the ratio of the number of relevant documents retrieved to the total number of relevant documents for the user's query that exist in the documentary database. In fuzzy ordinal linguistic IRSs (FOLIRSs), where extended Boolean queries are used, defining the user's queries in a manual way is usually a complex task. In this contribution. our interest is focused on the automatic learning of extended Boolean queries in FOLIRSs by means of multi-objective evolutionary algorithms considering both mentioned performance criteria. We present an analysis of two well-known general-purpose multi-objective evolutionary algorithms to learn extended Boolean queries in FOLIRSs. These evolutionary algorithms are the non-dominated sorting genetic a algorithm (NSGA-II) and the Strength Pareto evolutionary algorithm (SPEA2). (C) 2009 Elsevier B.V. All rights reserved.
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