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Czech National Corpus
The Czech National Corpus portal links corpus applications including KonText, SyD, Morfio, and Treq, alongside corpus news and resources.
About Czech National Corpus
The Czech National Corpus (Český národní korpus) portal provides access to corpora of Czech and tools for analysing them. The corpora include contemporary written Czech, internet Czech, spontaneous spoken Czech, historical Czech, and InterCorp, a parallel corpus with translations to or from more than 60 languages. Research tools on the portal include KonText for concordance searches and frequency and collocation analysis, SyD for comparing competing word variants, and Morfio for word-formation relations. The portal also publishes news about corpus releases and updates, such as new versions of the SYN corpus.
The homepage text is in Czech, with an English option listed. The source does not state pricing, access requirements, or usage limits for the corpora or tools.
Key features
- KonText searches corpora with simple and complex queries and shows concordance lines
- KonText calculates frequency distributions and collocation association measures
- SyD compares competing word variants across current Czech and its historical development
- Morfio finds word-formation pairs and evaluates morphological productivity
- Corpora covering written, internet, spoken, and historical Czech, plus InterCorp parallel texts
- Announces corpus releases, including SYN version 14 and the SYN2025 corpus
Best for: Linguists, lexicographers, and students who study Czech word use, variation, or word formation using corpus data.
Good for
- Brings together written, internet, spoken, historical, and parallel Czech corpora in one portal.
- Corpora are updated over time, for example SYN version 14, which the portal reports contains nearly 5.5 billion words.
- A manual describes the functions of KonText, according to the homepage.
Czech National Corpus at a glance
- Website
- korpus.cz
- Category
- Research & Data › Open Data & Datasets
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Last checked
- Oct 6, 2026 · Online when checked
- Listed
- Oct 5, 2026
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Czech National Corpus FAQ
Which corpus applications are linked from the portal?
The homepage links KonText, SyD, Morfio, Treq, KWords, Calc, Lists, Mapka, and other applications, along with corpus news and resources.
What kinds of texts are included in the Czech National Corpus?
The homepage lists contemporary written Czech of over 5 billion words, internet Czech of over 6 billion words, spontaneous spoken Czech, historical Czech, and the InterCorp parallel corpus with translations to or from more than 60 languages.
Can KonText identify words that commonly occur together?
Yes. According to the homepage, KonText can calculate association measures for collocations.
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