This corpus consists of texts that were released as part of the COVID-19 Open Research Dataset (CORD-19). Reference: COVID-19 Open Research Dataset (CORD-19). 2020. Version 2020-05-02. Retrieved from https://pages.semanticscholar.org/coronavirus-research. Accessed 2020-05-02. doi:10.5281/zenodo.3715505
How to access the corpus?
The corpus is in the “open” category: no account is required to get access, just visit
Please note: some functionalities (e.g. building user subcorpora or extracting terms and keywords against a large reference corpus) require having an account. Please create a trial account and email your username to email@example.com with the subject “Covid 19 corpus” and we will give you a free account to access this corpus. EU researchers will typically have free access through the ELEXIS infrastructure.
Tools to work with Covid-19 corpus
A complete set of tools is available to work with the Covid-19 to generate:
word sketch – 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 nouns, verbs, adjectives etc. organized by frequency
You can download the source vertical texts that is tokenised, part-of-speech tagged and lemmatised.
Please do note that the PoS tagging and lemmatisation has been done using TreeTagger and thus the annotation is available only for non-commercial purposes. Original licence applies to source texts only.
See original data changelog. Information below relates to the Sketch Engine processing.
version 2020-03-27 (published March 30th, 2020 in Sketch Engine)
data update + all metadata now preserved for articles
version 2020-03-20 (published March 26th, 2020 in Sketch Engine)
initial version, mark-up of abstracts, documents, back matter and citations
This corpus consists of texts that were released as part of the COVID-19 Open Research Dataset (CORD-19). Reference: COVID-19 Open Research Dataset (CORD-19). 2020. Version 2020-03-13. Retrieved from https://pages.semanticscholar.org/coronavirus-research. Accessed 2020-03-22. doi:10.5281/zenodo.3715506
Search the Covid-19 corpus
Sketch Engine offers a range of tools to work with the Covid-19 corpus.