12. A system, comprising: a memory; a processor, coupled to the memory, the processor configured to: perform a lexico-morphological analysis of a natural language text comprising a plurality of tokens, each token comprising at least one natural language word; determine, based on the lexico-morphological analysis, one or more lexical meanings and grammatical meanings associated with each token of the plurality of tokens; for each token of the plurality of tokens, evaluate one or more classifier functions using the lexical and grammatical meanings associated with the tokens, wherein a value of each classifier function is indicative of a degree of association of the token with a category of named entities; perform a syntactico-semantic analysis of at least part of the natural language text to produce a plurality of semantic structures representing the part of the natural language text; and interpret the semantic structures using a set of production rules to determine, for one or more tokens comprised by the part of the natural language text, a degree of association of the token with a category of named entities.
12. A system, comprising: a memory; a processor, coupled to the memory, the processor configured to: perform a lexico-morphological analysis of a natural language text comprising a plurality of tokens, each token comprising at least one natural language word; determine, based on the lexico-morphological analysis, one or more lexical meanings and grammatical meanings associated with each token of the plurality of tokens; for each token of the plurality of tokens, evaluate one or more classifier functions using the lexical and grammatical meanings associated with the tokens, wherein a value of each classifier function is indicative of a degree of association of the token with a category of named entities; perform a syntactico-semantic analysis of at least part of the natural language text to produce a plurality of semantic structures representing the part of the natural language text; and interpret the semantic structures using a set of production rules to determine, for one or more tokens comprised by the part of the natural language text, a degree of association of the token with a category of named entities. 13. The system of claim 12 , wherein the syntactico-semantic analysis of the part of the natural language text is performed responsive to determining that a metric indicative of a quality of associating the tokens with respective categories falls below a threshold value.