Yi-Ting Tsao, Jane Yung-jen Hsu. Personal Activity Logger with Hierarchical Activity Representation. In Activity Context Representation: Techniques and Languages, Papers from the 2011 AAAI Workshop, San Francisco, California, USA, August 7-8, 2011. Volume WS-11-04 of AAAI Workshops, AAAI, 2011. [doi]