Jie Liu 0007 Jimeng Chen Tianbi Liu Yalou Huang Expansion Finding for Given Acronyms Using Conditional Random Fields. 191-200 2011 WAIM https://doi.org/10.1007/978-3-642-23535-1_18 conf/waim/2011 db/conf/waim/waim2011.html#LiuCLH11