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The Eastern Armenian UD treebank is based on the Eastern Armenian section of the Armenian Dependency Treebank (Հայերենի ծառադարան), developed for UD originally by the ArmTDP team led by Marat M. Yavrumyan at the Yerevan State University.


The UD_Armenian-ArmTDP treebank is based on the Հայերենի ծառադարան dataset (version 2.0), a mix of texts sampled from different sources and representing different genres and domains (local on-line newspaper and journal articles, contemporary fiction dated between 1976 and 2019). The treebank consists of 2502 sentences (~53K tokens).

The annotation scheme was developed in accordance with the UD guidelines. The original data was manually annotated by the ArmTDP team. The tokenization and POS-tagging process was carried out through alternating steps of automatic scripting and manual revision in the YerevaNN research lab (led by Hrant H. Khachatrian). The treebank is so far the only manual verificated corpus of Eastern Armenian supplied with comprehensive morphological annotation and syntactic annotation in the form of a complete dependency tree provided for every sentence.


This work became possible through research grants from the Armenian National Science and Education Fund (ANSEF) based in New York, USA, and partially, from ISTC Foundation, Yerevan, Armenia.

The team behind the UD_Armenian-ArmTDP: Marat M. Yavrumyan, Hrant H. Khachatrian, Anna S. Danielyan, Gor D. Arakelyan, Martin S. Mirakyan.


  • Marat M. Yavrumyan, Hrant H. Khachatrian, Anna S. Danielyan, Gor D. Arakelyan. “ArmTDP: Eastern Armenian Treebank and Dependency Parser.” XI International Conference on Armenian Linguistics, Abstracts. Yerevan, 2017.
  • Marat M. Yavrumyan. “Universal Dependencies for Armenian.” International Conference on Digital Armenian, Abstracts. Inalco, Paris, October 3-5, 2019.

Data split

Data is split between train/dev/test linearly by hand at 80%/10%/10% to balance in genre and complexity. Some large documents are divided across datasets.

See stats.xml for detail.


UD_Armenian-ArmTDP data conforms to CoNLL-U format with the following specifics:

  • Sentence-level comments:
    • Document titles are present as # doc_title = Ագռավները Նոյից առաջ.
    • Document boundaries are present as # newdoc id = fiction/news-xxxx.
    • Sentence-level paragraph boundaries are present as # newpar id = newdoc-xxxx.
    • Sentence boundaries are present as # sent_id = newdoc-newparxxxx.
  • XPOSTAG column is currently unused.
  • No enhanced dependencies or empty nodes present in DEPS column.
  • MISC column:
    • SpaceAfter=No markers are present.
    • Form (Translit) and lemma (LTranslit) transliterations are present.
  • Document, paragraph, sentence, and token ids are 4-character base-32 numbers. They survive treebank updates.


  • 2021-15-05 v2.8

    • Improved treatment of Deixis.
  • 2019-15-11 v2.5

    • Fixed annotation errors and added new texts: 36K→52K.
    • aux:ex added.
    • aux for AUX պիտի and պետք է.
    • MWE fixed.
    • reflexive pronouns/determiners improved.
  • 2019-15-05 v2.4

    • Fixed annotation errors and added new texts: 23K→36K.
    • dislocated added.
    • Improved treatment of case-marking elements, range numbers.
    • Fixed some validation errors.
    • Added transliteration (ISO 9985:1996).
    • Improved consistency by extending annotation guidelines to rarer phenomena.
  • 2018-31-10 v2.3

    • expl added.
    • Reconsidered Animacy.
    • Improved advmod vs. obl distinction.
    • Improved treatment of comparative complements.
    • Fixed various individual annotation errors and inconsistencies, added new texts: 12K→23K.
  • 2018-30-03 v2.2

    • Initial release
=== Machine-readable metadata (DO NOT REMOVE!) ================================
Data available since: UD v2.2
License: CC BY-SA 4.0
Documentation status: full
Includes text: yes
Genre: blog fiction grammar-examples legal news nonfiction  
Lemmas: manual native
UPOS: manual native
XPOS: not available
Features: manual native
Relations: manual native
Contributors: Yavrumyan, Marat M.
Contributing: elsewhere
Documentation contributors: Yavrumyan, Marat M.; Danielyan, Anna S.


Armenian data.




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