diff options
Diffstat (limited to 'corp/russian')
| -rw-r--r-- | corp/russian/data-import/src/main.rs | 57 |
1 files changed, 53 insertions, 4 deletions
diff --git a/corp/russian/data-import/src/main.rs b/corp/russian/data-import/src/main.rs index 85e89a905b8c..21d4209991c5 100644 --- a/corp/russian/data-import/src/main.rs +++ b/corp/russian/data-import/src/main.rs @@ -1,10 +1,10 @@ -//! This program imports Russian language data from OpenCorpora -//! ("Открытый корпус") into a SQLite database that can be used for -//! [//corp/russian][corp-russian] projects. +//! This program imports Russian language data from OpenCorpora and +//! OpenRussian ("Открытый корпус") into a SQLite database that can be +//! used for [//corp/russian][corp-russian] projects. //! //! [corp-russian]: https://at.tvl.fyi/?q=%2F%2Fcorp%2Frussian //! -//! Ideally, running this on an OpenCorpora dump should yield a fully +//! Ideally, running this on intact dumps should yield a fully //! functional SQLite database compatible with all other tools //! consuming it. //! @@ -53,6 +53,55 @@ //! //! For example, a relationship `cardinal/ordinal` might be established //! between the lemmas "два" and "второй". +//! +//! ## OpenRussian format +//! +//! The [OpenRussian](https://en.openrussian.org/dictionary) project +//! lets users export its database as a set of CSV-files. For our +//! purposes, we download the files using `<tab>` separators. +//! +//! Whereas OpenCorpora opts for a flat structure with a "tag" system +//! (through its flexible grammemes), OpenRussian has a fixed pre-hoc +//! structure into which it sorts some words with their morphologies. +//! The OpenRussian database is much smaller as of January 2023 (~1.7 +//! million words vs. >5 million for OpenCorpora), but some of the +//! information is much more practically useful. +//! +//! Two very important bits of information OpenRussian has are accent +//! marks (most tables containing actual words have a normal form +//! containing and accent mark, and a "bare" form without) and +//! translations into English and German. +//! +//! The full dump includes the following tables (and some more): +//! +//! * `words`: List of lemmas in the corpus, with various bits of +//! metadata as well as hand-written notes. +//! +//! * `adjectives`: Contains IDs for words that are adjectives. +//! +//! * `nouns`: IDs for words that are nouns; and noun metadata (e.g. +//! gender, declinability) +//! +//! * `verbs`: IDs of words that are verbs, including their aspect and +//! "partnered" verb in the other aspect +//! +//! * `words_forms`: Contains all morphed variants of the lemmas from +//! `words`, including information about their grammeme, and accent +//! marks. +//! +//! * `words_rels`: Contains relations between words, containing +//! information like "synonyms" or general relation between words. +//! +//! * `translations`: Contains translations tagged by target language, +//! as well as examples and (occasionally) additional information. +//! +//! These tables also contain something, but have not been analysed +//! yet: +//! +//! * `expressions_words` +//! * `sentences` +//! * `sentences_translations` +//! * `sentences_words` use log::{error, info}; use rusqlite::{Connection, Result}; |