Shtogrina O. Information technology of fuzzy knowledge base development and use based on metagraph

The fuzzy logic model for information processing is improved in the thesis. Fuzzy knowledge base representation in the form of a metagraph, the algorithms for metagraph construction, numbering metagraph vertices, finding necessary metagraph's part and fuzzy inference based on metagraph are proposed. The requirements for structure of metagraph corresponding to non-redundant, linguistic non-contradicted and linguistic complete fuzzy knowledge base are defined. Fuzzy knowledge base properties static verification based on metagraph structure analysis is proposed. The thesis describes the method for metagraph and hierarchical metagraph visualization based on the principles of force-directed algorithms. The information technology for based on metagraph fuzzy knowledge base development and usage is described. This technology includes improved model, developed methods and algorithms. The proposed technology includes tools for fuzzy knowledge base development and usage for complex object evaluation. It includes software module to create and edit based on metagraph fuzzy knowledge base, software module to visualize metagraph, software module for fuzzy knowledge base static verification, software module for based on metagraph fuzzy inference, software module to work with databases. Keywords: fuzzy knowledge base, static verification, fuzzy knowledge base properties, visualization, metagraph, the information technology.