Validating bundled gap filling – Empirical evidence for ambiguity reduction and language proficiency testing capabilities Niklas Meyer author Michael Wojatzki author Torsten Zesch author 2016-11 text Proceedings of the joint workshop on NLP for Computer Assisted Language Learning and NLP for Language Acquisition Elena Volodina editor Gintarė Grigonytė editor Ildikó Pilán editor Kristina Nilsson Björkenstam editor Lars Borin editor LiU Electronic Press Umeå, Sweden conference publication meyer-etal-2016-validating https://aclanthology.org/W16-6507/ 2016-11 51 59