Ontologyhh-based semantic trust computation based in semantic Web

A semantic trust computation algorithm of information was presented according to the attributes of information and interaction mechanism of nodes in semantic Web.Semantic trust can be defined as content trust of information and the node trust between the nodes that diffuse the information.The algorithm is composed by three parts.First,each node computes the content trust of the information according to the formal description of knowledge provided by its own ontology.Secondly,nodes compute the node trust through the interaction of information.Thirdly,the two former computations can be integrated into semantic trust of information.This paper presented a dynamic trust control mechanism of information propagation.The mechanism supports the propagation of information based on trust in semantic Web.Stimulations and analyses show that the semantic trust of information can be computed and propagated effectively.