Use of ontological analysis for creation of encyclopedic portals

We analyze the expediency of the development of the intelligent, semantically structured information Web resources that are oriented both on their use by humans and their suitability for automated analysis. The advantages and disadvantages of the Wiki technology and the perspectives of its semantic expansion with the use of ontological analysis are considered. Formal ontological model of the Wiki-resource that underlies the development of the user task ontology oriented for utilization by external intelligent applications (for example, for semantic search) is proposed. The main stages of construction of this ontology are described. The implementation of the proposed ontology-based approach is demonstrated on example of the development of on-line encyclopaedias combining free access to materials through the Web with a high level confidence in content developed by experts, is considered. We analyze the basic requirements for software that provides such projects. The necessity of semantization of such resources is substantiated and the main directions of development of the functional of semantic electronic encyclopedias are formulated. The article presents an analysis of the expressive power of the Wiki means for knowledge representation and processing. The need to expand them with artificial intelligence methods and Semantic Web technologies is stated. An ontological model of the encyclopedia serving for development of the portal version of the Great Ukrainian Encyclopedia is built. The main categories and semantic properties of typical information objects that are used in this Encyclopedia that can be applied for retrieval and integration of information are described.