Clean Corpus of Historical American English (CCOHA)
Reem Alatrash, Dominik Schlechtweg, Sabine Schulte im Walde
The Corpus of Historical American English (COHA) is one of the most commonly used large corpora in diachronic studies in English. We provide methods applicable to the downloadable version of the COHA corpus in order to overcome its main limitations, such as inconsistent lemmas and malformed tokens, without compromising its qualitative and distributional properties.
The resulting corpus CCOHA contains a larger number of cleaned word tokens which can offer better insights into language change and allow for a larger variety of tasks to be performed.