支持单变量双极偏好条件的RDF模糊查询方法

he RDF query methods are proposed to analyze the preference information and characteristics of daily expression. Preference criteria in query are described in the linguistic method. Extended SPARQL language is applied to express preference, RDF fuzzy query method of linguistic variable is used to get approximate result after defuzzification. The degree of results’ compliance with univariate bipolarity preference criteria is evaluated using unipolarity satisfaction degree function. A priority function is defined to guide the sorting operation to optimize the results. Finally, an experimental system is developed and the experimental results show the feasibility of the proposed approach.