Intellectual mechanisms for semantic searching in Internet

The methods of searching in Internet based on knowledge extraction from texts are considered. During the first stage, the significant key words are extracted from the question. They are used by the program-spider to select adequate texts from Internet. In the second stage, semantic-oriented linguistic processor is used. It analyzes the text of question and selected texts to form their knowledge structures. Semantic search consists in matching these structures and forming the answer for users. Various kinds of semantic search are considered.