The error-annotated German learner corpus Falko has released a new subcorpus: FalkoEssayL2WHIGv2.0 including 195 argumentative essays by advanced learners of German (117,189 tokens).
For each text two full-text target hypotheses (a minimal morphosyntactic normalization and an extended semantic-pragmatic version) have been manually annotated.
Each representation has been POS-tagged and lemmatized (Treetagger & rfTagger). rfTagger morphological annotation has been integrated as well.
On this basis, tags indicating differences between the learner text and its POS and lemma annotations and the respective target hypotheses (POS & lemma) have been added.
The corpus is freely available under the following link: http://korpling.german.hu-berlin.de/falko-suche
The annotation guidelines can be found here: http://www.linguistik.hu-berlin.de/institut/professuren/korpuslinguistik/forschung/falko/Falko-Handbuchv2.0.pdf