Design And Implementation Of Knowledge Credibility Assessment Tool Oriented To Domain Knowledge Network

With the development of modern society,domain knowledge has become more and more complex.In the process of applying knowledge,the credibility of knowledge affects the establishment of the domain knowledge system by the users.Highly credible knowledge can help users to correctly understand the concepts in the domain and the relationships between them.With the continuous expansion of domain knowledge,the credibility of knowledge has attracted more and more attention.As a domain knowledge representation model,domain knowledge network has a good hierarchical structure.It is a good entry point to evaluate the credibility of knowledge oriented to domain knowledge network and has high research value.In order to evaluate the credibility of the domain knowledge network,this paper proposes a knowledge credibility evaluation method oriented to the domain knowledge network,which combines the credibility evaluation method based on the domain standard and the credibility based on the credibility index model evaluation method.First,according to the hierarchical structure of domain knowledge network,it is divided into knowledge context layer,knowledge content layer and knowledge application layer.The detailed content includes:(1)the knowledge context layer and the knowledge content layer both use the method of comparing with domain standards to calculate the credibility.The knowledge context layer mainly calculates the semantic similarity of concepts and the value range similarity of concepts,and weights the credibility of the knowledge context layer.;(2)The knowledge content layer mainly calculates the similarity of attributes and the similarity of relations,and weights the credibility of the knowledge content layer;(3)The knowledge application layer determines its credibility through the accuracy of the domain knowledge network to solve the problem.The credibility of the above three layers is the knowledge credibility of the domain knowledge network.In the experiment,6 domain knowledge networks constructed based on network data and6 domain knowledge networks constructed manually based on published books were selected in the experiment,two-by-two,describing the knowledge of the same domain,and the manual construction of domain knowledge was discovered through credibility evaluation.The credibility of the network is significantly higher than the credibility of the domain knowledge network based on network data,which is in line with the expectations of the experiment,which proves the effectiveness of the credibility evaluation method.The upload,construction and storage time of the domain knowledge network increases with the scale of the data,but the running time of the credibility assessment is generally less than 5s,which meets the needs of use.