Tatar and Russian

This is a language pair translating from Tatar to Russian. The pair is currently located in nursery.

Current state

Last updated	Testvoc (clean or not)	Corpus testvoc (no *, no */@, no */@/#)	Stems in bidix	WER, PER on dev. corpus	WER, PER on unseen texts
26/05/2014	No	news(40.5, 40.3, 34.2) wp(40.6, 40.3, 37.1) aytmatov(56.2, 56.1 50.7) NT(52.4, 52.1, 46.5) Quran(50.1, 50.0, 44.8)	236	71.84 %, 55.00 %	--

• Testvoc = apertium-tat-rus/testvoc/standard/testvoc.sh
• Corpus testvoc = apertium-tat-rus/testvoc/corpus/trimmed-coverage.sh. Corpora can be found in the turkiccorpora repository.
  • news = tat.news.2005-2011_300K-sentences.txt.bz2, wp = tat.wikipedia.2013-02-25.txt.bz2 NT = tat.NT.txt.bz2. Others are unambiguous.
• Number of stems taken from the header "aperium-dixtools format-1line 10 55 apertium-tat-rus.tat-rus.dix" produces.
• Development corpus = apertium-tat-rus/corpus (-test = tat-rus-nova.txt, -ref = tat-rus-posted.txt). WER / PER results are given when unknown-word marks (stars) are not removed.

Workplan (GSoC 2014)

This is a workplan for development efforts for the Tatar to Russian translator in Google Summer of Code 2014.

Major goals

• Clean testvoc
• 10000 top stems in bidix and at least 80% trimmed coverage
• Constraint grammar of Tatar containing at least 1000 rules, which makes 90-95% of all words unambiguous, with at least 95% retaining the correct analysis.
• Average WER on unseen texts below 50

Overview

Weeks 1-6		Weeks 7-12		Saturdays
get categor(y/ies) testvoc clean with one word ->	<- (Saturdays) add more stems to categor(y/ies) while preserving testvoc clean	disambiguation	lexical selection	adding stems
transfer rules for pending wiki tests (focus on phrases and clauses, not single words)

Weekly schedule

Week	Dates	Goals	Reached
1	19/05—25/05	Testvoc-lite for nouns clean	✓
2	26/05—01/06	Testvoc-lite for adjectives clean At least 5 new phrase types supported All nouns from tat.lexc added to bidix
3	02/06—08/06	Testvoc-lite for verbs clean
4	09/06—15/06	Testvoc-lite for adverbs clean
5	16/06—22/06	Testvoc-lite for numerals clean
6	23/06—29/06	Testvoc for pronouns clean
12	04/08—10/08	Gisting evaluation
13	11/08—18/08	Installation and usage documentation for end-users (in Tatar/Russian)

• Testvoc-lite (apertium-tat-rus/testvoc/lite$ ./testvoc.sh) for a category means taking one word per each sub-category and making the full paradigm of the word pass through the translator without debug symbols. E.g. "testvoc-lite for nouns clean" means that if we leave only one word in each of the N1, N-COMPOUND-PX etc. lexicons, they will pass through translator without [@#] errors.
• Evaluation is taking $n$ words and performing an evaluation for post-edition word error rate (WER). The output for those $n$ words should be clean.