DRT Representation of Degrees of Belief Yafa Al-Raheb author 2006-07 text Proceedings of the 7th SIGdial Workshop on Discourse and Dialogue Jan Alexandersson editor Alistair Knott editor Association for Computational Linguistics Sydney, Australia conference publication al-raheb-2006-drt https://aclanthology.org/W06-1307/ 2006-07 46 53