Proceedings of the 2nd Workshop on Life-long Learning for Spoken Language Systems William M Campbell editor Alex Waibel editor Dilek Hakkani-Tur editor Timothy J Hazen editor Kevin Kilgour editor Eunah Cho editor Varun Kumar editor Hadrien Glaude editor 2020-12 Association for Computational Linguistics Suzhou, China text conference publication lifelongnlp-2020-life 10.18653/v1/2020.lifelongnlp-1.0 https://aclanthology.org/2020.lifelongnlp-1.0/