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Disclaimer

This project created by me 5 years ago for educational purposes. For a while it was abandoned and archived, but many people contacted me to ask for help with use of this code. So, I've made the smallest effort to make a proper package from this code while keeping all functionalities and code formatting. No further development is planned. I discourage you to use it for any serious purposes other than educational.

12-05-2024

Syntax Analyzer

This is syntax analyzer for Russian based on context-free grammar. It uses OpenCorpora dictionary of labelled words and pymorphy2 as interface.

The repository consitsts of two main parts:

(1) tree - class of binary tree to represent structure of sentence

(2) parser - parser that takes raw sentence and returns set of possible parse-trees

There are also complements:

data/grammar.txt - context-free grammar for russian

data/dict - dictionary of some complex phrases (conjugations, predicatives, adverbs etc.) that don't present in OpenCorpora dictionary.

Getting started

Installation

Clone the repository

git clone

Install package

pip install .

Example

from syntax_analyzer.parser import Parser

parser = Parser()

sent = "Мама мыла раму."

t = parser.parse(sent)

t[0].display()
S
       NP[case='nomn'] 
           Мама ['NOUN', 'sing', 'femn', 'nomn']
   VP[tran]
           VP[tran] 
                 мыла ['VERB', 'sing', 'femn', 'tran', 'past']
           NP[case='accs'] 
                 раму ['NOUN', 'sing', 'femn', 'accs']