Shinjae Yoo Donna Gates Lori S. Levin Simon Fung Sachin Agarwal 0002 Michael Freed Using Semantic Features to Improve Task Identification in Email Messages. 355-357 2008 NLDB http://dx.doi.org/10.1007/978-3-540-69858-6_43 conf/nldb/2008 db/conf/nldb/nldb2008.html#YooGLFAF08