A fuzzy set approach to flexible case-based querying: methodology and experimentation

International audienceQueries to a database can be made more powerful, by allowing flexibility in the specification of what has to be retrieved, and by referring to cases either for expressing the request, or for computing the answer. In this paper, we present an implemented information system (applied to a database describing houses to be rent), based on an approach developed in the fuzzy set and possibility theory setting. This provides a unified framework for expressing users' preferences about what he is-looking for, for weighting the importance of requirements, for referring to examples that he likes and/or counterexamples that he dislikes, and for maldng case-based predictions