CoNLL 2017 shared task: Multilingual parsing from raw text to universal dependenciesDaniel ZemanMartin Popelet al.2017CoNLL 2017
Shared Tasks of the 2015 Workshop on Noisy User-generated Text: Twitter Lexical Normalization and Named Entity RecognitionTimothy BaldwinMarie-Catherine de Marneffeet al.2015ACL-IJCNLP/WNUT 2015