Jordi Poveda Mihai Surdeanu Jordi Turmo A Comparison of Statistical and Rule-Induction Learners for Automatic Tagging of Time Expressions in English. 141-149 2007 conf/time/2007 TIME http://doi.ieeecomputersociety.org/10.1109/TIME.2007.38 db/conf/time/time2007.html#PovedaST07