On Quality Ratings for Spoken Dialogue Systems – Experts vs. Users Stefan Ultes author Alexander Schmitt author Wolfgang Minker author 2013-06 text Proceedings of the 2013 Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies Lucy Vanderwende editor Hal Daumé III editor Katrin Kirchhoff editor Association for Computational Linguistics Atlanta, Georgia conference publication ultes-etal-2013-quality https://aclanthology.org/N13-1064/ 2013-06 569 578