Extracting and modeling durations for habits and events from Twitter Jennifer Williams author Graham Katz author 2012-07 text Proceedings of the 50th Annual Meeting of the Association for Computational Linguistics (Volume 2: Short Papers) Haizhou Li editor Chin-Yew Lin editor Miles Osborne editor Gary Geunbae Lee editor Jong C Park editor Association for Computational Linguistics Jeju Island, Korea conference publication williams-katz-2012-extracting https://aclanthology.org/P12-2044/ 2012-07 223 227