SEAVE: a mechanism for verifying user presuppositions in query systems
ACM Transactions on Information Systems (TOIS)
Stability of linguistic modifiers compatible with a fuzzy logic
Proceedings of the 2nd International Conference on Information Processing and Management of Uncertainty in Knowledge-Based Systems on Uncertainty and intelligent systems
Cooperative Answering through Controlled Query Relaxation
IEEE Expert: Intelligent Systems and Their Applications
Cooperative Responses to Boolean Queries
Proceedings of the First International Conference on Data Engineering
On the Weakening of Fuzzy Relational Queries
ISMIS '94 Proceedings of the 8th International Symposium on Methodologies for Intelligent Systems
Flexibility and fuzzy case-based evaluation in querying: an illustration in an experimental setting
International Journal of Uncertainty, Fuzziness and Knowledge-Based Systems
Machine learning for online query relaxation
Proceedings of the tenth ACM SIGKDD international conference on Knowledge discovery and data mining
OTM'05 Proceedings of the 2005 Confederated international conference on On the Move to Meaningful Internet Systems - Volume >Part I
Relaxation paradigm in a flexible querying context
FQAS'06 Proceedings of the 7th international conference on Flexible Query Answering Systems
Answering approximate queries over autonomous web databases
Proceedings of the 18th international conference on World wide web
A Model for Contextual Cooperative Query Answering in E-Commerce Applications
FQAS '09 Proceedings of the 8th International Conference on Flexible Query Answering Systems
Trimming plethoric answers to fuzzy queries: an approach based on predicate correlation
IPMU'10 Proceedings of the Computational intelligence for knowledge-based systems design, and 13th international conference on Information processing and management of uncertainty
Retrieving samples from biobanks
ITBAM'10 Proceedings of the First international conference on Information technology in bio- and medical informatics
On the use of fuzzy cardinalities for reducing plethoric answers to fuzzy queries
SUM'10 Proceedings of the 4th international conference on Scalable uncertainty management
On four noncommutative fuzzy connectives and their axiomatization
Fuzzy Sets and Systems
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When retrieving and searching desired data over large databases accessible in the web, users might be confronted with two common problems: overabundant answers and empty answers. In the former, the user is provided with an avalanche of responses that satisfy his/her query, while in the latter, no data are returned to the query asked. In this paper, we attempt to address those problems in the context of flexible queries. The basic idea behind the solutions proposed consists in modulating the fuzzy conditions involved in the user query by applying appropriate transformations. According to the problem at hand, this operation leads to a relaxation or an intensification of the user query. Two particular transformations that rely on a convenient parameterized proximity relation are introduced. The predicates of the modified queries are obtained by means of fuzzy arithmetic. The main properties of our proposal are investigated and a comparison with other approaches is outlined.