Renyi Entropy Based Weight Calculation of Property in Data Linking

A domain-independent method of property weight calculation based on Renyi entropy was presented to make up for the deficiency of traditional methods.First the relation between property 's weight and its value distribution features of property was analyzed based on probability theory,and then the rationality of describing value distribution features with Renyi entropy was verified.Finally,the property weight calculation method based on Renyi entropy was proposed.This method can automatically obtain Renyi entropy of value distribution from the linked dataset and calculate the weight of property.The experiments based on the open semantic datasets and the comparative analyses with existing methods indicate that the Renyi entropy based method can obtain more reasonable weights of properties.