So far a lot of research has been conducted in the field of machine translation and knowledge acquisition, including both statistical approaches (Cherry and Lin, 2003;Probst and Brown, 2002;Wang et al., 2002;Och and Ney, 2000;Melamed, 2000;Vogel et al., 1996) and symbolic approaches (Huang and Choi, 2000;Ker and Chang, 1997).
these approaches do not work well on the task of NE alignment.