Русская версия
St.Petersburg State University

AGFL Grammar

for the

Russian Language

AGFL WorkLab


The Rus4IR Grammar consists of two levels: a level of context-free rules, extended with set-valued features (also described by Context-Free rules) which express agreement between constituents. For complete coverage of the topic see the official AGFL site.

Being a language with comparatively free word order, Russian needs an intricate system of rules for producing a good analysis, more complicated than for English. Furthermore, the Rus4IR Grammar is intended for Information Retrieval purposes, hence has been made robust to unknown or misspelled words and ill-formed sentences. The grammar consists of a number of modules designed to represent various structures of the language:

You can download a zip-file containing the current grammar files here
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