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Information in real world application is often vague or ambiguous. Currently, less research has been done in modeling fuzziness in conceptual data model and design of fuzzy databases. In this paper, based on fuzzy set and possibility theory, the fuzzy IFO model and the corresponding graphical representations are presented. In particular, we provide the approach to mapping a fuzzy IFO model to a fuzzy...
In this paper, on the basis of the concept of nonmonotonic fuzzy measures, we study further some special properties with respect to this kind of Choquet integral, and being directed against this kind of nonmonotonic fuzzy measures added to continuity, we give monotonic bounded convergence theorem of this kind of new Choquet integral.
RIF (Rule Interchange Format) has become W3C's candidate recommendation on rule interchange. To let RIF represent and interchange fuzzy knowledge in the Semantic Web, we propose RIF-FRD (RIF Fuzzy Rule Dialect), a rule interchange format based on fuzzy sets, defining its XML syntax and metamodel. Based on the metamodel, we propose a fuzzy RIF framework-f-RIA (fuzzy Rule Interchange Architecture),...
In order to model complex objects with imprecision and uncertainty, fuzzy object-oriented databases have been proposed. In this paper, some algebraic operations are investigated based on a kind of fuzzy object-oriented database model. We also discuss fuzzy query processing of the fuzzy object-oriented databases.
In this paper, based on possibility distribution and the semantic measure of fuzzy data, we investigate subclass-superclass relationships in the fuzzy object-oriented databases. We identify fuzzy class and develop soft computing methods in the paper to quantitatively determine the fuzzy subclass-superclass hierarchies. The strategies to resolve the conflicts in multiple inheritance of class are also...
In order to deal with complex as well as uncertain information, in this paper, we introduce fuzzy data into nested relational database model, where data fuzziness appears in forms of possibility distribution and resemblance relations in the universe of discourse. We present the structure of fuzzy nested relational model and define the algebra for manipulating fuzzy and complex data.
There are two major difficulties in the indefinite multi-objective decision making process: As the information about attributes is indefinite, how to express the indefinite information; as the information has multi-channels, how to fuse the information into synthetic information. The multiple-valued intuitive fuzzy sets is one new mathematical model, this model can process well fuzzy information gained...
In the real world, human knowledge and natural language have a big deal of imprecision and uncertainty. Imprecision and uncertainty play in the semantic Web context, as well as to many applications that use description logics (DLs) to capture, represent and perform reasoning with domain knowledge. In this paper, a fuzzy extension of description logic language SI is presented, which combines vague...
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