ACL-08: HLT combines the Annual Meeting of the Association for Computational Linguistics (ACL) with the Human Language Technology Conference (HLT) of the North American Chapter of the ACL. The conference covers a broad spectrum of disciplines working towards enabling intelligent systems to interact with humans using natural language, and towards enhancing human-human communication through services such as speech recognition, automatic translation, information retrieval, text summarization, and information extraction. ACL-08: HLT will feature full papers, short papers, posters, demonstrations, and a doctoral consortium, as well as pre- and post-conference tutorials and workshops. The conference is organized by the Association for Computational Linguistics, in cooperation with The North American Chapter of the ACL.