Virtual Modality: a Framework for Testing and Building Multimodal Applications Péter Pál Boda author Edward Filisko author 2004-may 2 - may 7 text Proceedings of the HLT-NAACL 2004 Workshop on Spoken Language Understanding for Conversational Systems and Higher Level Linguistic Information for Speech Processing Association for Computational Linguistics Boston, Massachusetts, USA conference publication boda-filisko-2004-virtual https://aclanthology.org/W04-3004/ 2004-may 2 - may 7 17 24