Returning-Home Analysis in Tokyo Metropolitan Area at the time of the Great East Japan Earthquake using Twitter Data Yusuke Hara author 2013-10 text Proceedings of the Workshop on Language Processing and Crisis Information 2013 Kentaro Inui editor Hideto Kazawa editor Graham Neubig editor Masao Utiyama editor Asian Federation of Natural Language Processing Nagoya, Japan conference publication hara-2013-returning https://aclanthology.org/W13-4506/ 2013-10 44 50