czTenTen: Corpus of the Czech Web

The Czech Web Corpus (czTenTen) is a language 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 30 languages.

Data was crawled by the SpiderLing web spider in spring 2012 and comprised of almost 5 billion words.

Detailed information about TenTen corpora is on the separate page Common TenTen corpora attributes.

Part-of-speech tagset

The czTenTen corpus was POS annotated by the Majka tool using the following POS tagset.

Tools to work with the Czech Web corpus

A complete set of Sketch Engine tools is available to work with this Czech Web corpus to generate:

  • word sketch – Czech collocations categorized by grammatical relations
  • thesaurus – synonyms and similar words for every word
  • word lists – lists of Czech nouns, verbs, adjectives etc. organized by frequency
  • n-grams – frequency list of multi-word units
  • concordance – examples in context


version 9 (2017-05-20)

  • added lempos (a combination of lemma and one-letter abbreviation of the part of speech, e.g. dům-n)

version 8 (2014-09-17)

  • M ? j removed

Thanks to Marek Grác for spotting much errors and contributing to a cleaner corpus.

version 7 (2014-08-04)

  • Paragraphs without accents removed.

version 6 (June 2014)

  • Machine translated documents from domains and removed.

version 5 (May 2014)

  • Malformed vertical lines corrected (MacLeodovy MacL eodůvk2eAgFnPc1d1 –> MacLeodovy MacLeodův k2eAgFnPc1d1).

version 4 “clean 2” (March 2014)

  • Documents containing a certain wrong character caused by wrong encoding detection were removed.

version 3 “clean” (2013)

  • Paragraphs containing more than 20 % of words not recognized by morphological analyzer Majka were removed.

version 2 (December 2012)

version 1 (September 2012)

  • tagged by Majka + Desamb

version 1 untagged (April 2012)

  • initial version – 4.8 G words


TenTen corpora

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).

czTenTen corpus

Suchomel, Vít (2012). Recent Czech Web Corpora. In 6th Workshop on Recent Advances in Slavonic Natural Language Processing. Brno, pp. 77–83.

Search the Czech Web corpus

Sketch Engine offers a range of tools to work with the czTenTen corpus.


Other text corpora in Sketch Engine

Sketch Engine offers 400+ language corpora.

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