Considered to improve the efficiency of the system by creating a knowledge base of electronic information resources in information systems. Theoretically based General structure for knowledge extraction in intelligent information systems and its representation in the semantic network of production. Developed semantic production model of the information resource. The model used fuzzy inference to improve the efficiency of decision-making when working with semantic production rules model. For the proposed approach was developed, the proposed block diagram of the algorithm, which gives the rule for this algorithm. It also describes the models and algorithms developed on the basis of the proposed approach.