bgTenTen: Bulgarian Corpus of the Bulgarian Web

The Bulgarian Web Corpus (bgTenTen) is a Bulgarian corpus made up of texts collected from the Internet. The corpus belongs to the TenTen corpus family which is a set of the web corpora built using the same method with a target size 10+ billion words. Sketch Engine currently provides access to TenTen corpora in more than 50 languages. Detailed information about TenTen corpora is on the separate page Common TenTen corpora attributes.

The most recent version of the bgTenTen Bulgarian corpus consists of 4.6 billion words. The texts were downloaded in September–October 2021 and the Bulgarian Wikipedia is from December 2020. The sample texts of the biggest web domains which account for 51% of all corpus texts were checked semi-manually and content with poor quality text and spam was removed.

Part-of-speech tagset

The bgTenTen corpus is annotated by TreeTagger trained on Bulgarian TreeBank part-of-speech tagset.

Bulgarian corpus 2021 in statistics:

Number of tokens 5,6+ billion
Number of words 4.6+ billion
Number of sentences 298+ million
Number of documents 17+ million

Overview of Bulgarian TenTen corpora

This is a list of English Web corpora available in Sketch Engine:

  • Bulgarian Web corpus 2021 (bgTenTen21) – 4.6 billion words, genre annotation and topic classification
  • Bulgarian Web corpus 2012 (bgTenTen12) – 705 million words

Genre annotation and topic classification

A part of the Bulgarian Web 2021 corpus contains genre annotation and topic classification. These can be displayed as corpus structures in Concordance  or in the Text type Analysis tool. Detailed information about topic and genre classification can be found in our article Topics and genres in corpora.

  • genres cover 14.03% of the corpus, i.e. 800 million tokens
  • topic classification covers 9.65% of the corpus, i.e. 500 million tokens

Hover over the chart to display a number of tokens of the particular topic.

Tools to work with the Bulgarian corpus

A complete set of Sketch Engine tools is available to work with this Bulgarian web corpus from to generate:

  • word sketch – Bulgarian collocations categorized by grammatical relations
  • thesaurus – synonyms and similar words for every word
  • keywords – terminology extraction of one-word and multi-word units
  • word lists – lists of Bulgarian nouns, verbs, adjectives etc. organized by frequency
  • n-grams – frequency list of multi-word units
  • concordance – examples in context
  • text type analysis – statistics of metadata in the corpus

version 1 (bgTenTen21)

  • initial version
  • topic and genre classification

version 1 (bgTenTen12)

  • initial version, obtained from the web in 2012

TenTen corpora

SUCHOMEL, Vít. Better Web Corpora For Corpus Linguistics And NLP. 2020. Available also from: Doctoral thesis. Masaryk University, Faculty of Informatics, Brno. Supervised by Pavel RYCHLÝ.

Jakubíček, M., Kilgarriff, A., Kovář, V., Rychlý, P., & Suchomel, V. (2013, July). The tenten corpus family. In 7th International Corpus Linguistics Conference CL (pp. 125-127).

Suchomel, V., & Pomikálek, J. (2012). Efficient web crawling for large text corpora. In Proceedings of the seventh Web as Corpus Workshop (WAC7) (pp. 39-43).

Genre annotation

SUCHOMEL, Vít. Genre Annotation of Web Corpora: Scheme and Issues. In Kohei Arai, Supriya Kapoor, Rahul Bhatia. Proceedings of the Future Technologies Conference (FTC) 2020, Volume 1. Vancouver, Canada: Springer Nature Switzerland AG, 2021. s. 738-754. ISBN 978-3-030-63127-7. doi:10.1007/978-3-030-63128-4_55.

Search the Bulgarian corpus

Sketch Engine offers a range of tools to work with this Bulgarian corpus.

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