Abstract:
The new class of logical-information systems are considered. It uses the special linguistic processors and technology of knowledge base (KB) for processing the streams of unformalized information to decide the user's tasks. At first stage the texts of documents is deeply processed to extract information objects and links between them. On this base the knowledge structure are formed and fill in KB. On level of KB the various kinds of analysis and semantic search strategies are organized. It includes the search of similar objects, search by links and so on. The main components and significant application of the systems named as semantic-oriented are considered.