A Unified Formalism for Fuzzy Data Types Representation

This paper mainly discusses the fuzzy extension to the data type representation mechanism of the existing XML schema and OWL. In accordance with the needs of practical application, we prompt a kind of fuzzy extension form to XML schema data typing and point out the limitations of OWL data typing. Furthermore, we mainly investigate the description logic playing as the underlining theory counterpart of the corresponding Web ontology language, and make the following contributions: (i) define the fuzzy data type group and the general formalism to represent fuzzy data type information; (ii) define the fuzzy data type query questions based on the fuzzy data type group and discuss the decidability of these query questions.