Learner Corpus Anonymization in the Age of GDPR: Insights from the Creation of a Learner Corpus of Swedish

Be{\'a}ta Megyesi, Lena Granstedt, Sofia Johansson, Julia Prentice, Dan Ros{\'e}n, Carl-Johan Schenstr{\"o}m, Gunl{\"o}g Sundberg, Mats Wir{\'e}n, Elena Volodina