Advances in meeting recognition Alex Waibel author Hua Yu author Tanja Schultz author Yue Pan author Michael Bett author Martin Westphal author Hagen Soltau author Thomas Schaaf author Florian Metze author 2001 text Proceedings of the First International Conference on Human Language Technology Research conference publication waibel-etal-2001-advances https://aclanthology.org/H01-1003/ 2001