Improving the performance of question answering with semantically equivalent answer patterns.

Leila Kosseim Jamileh Yousefi Improving the performance of question answering with semantically equivalent answer patterns. 53-67 2008 66 Data Knowl. Eng. 1 http://dx.doi.org/10.1016/j.datak.2007.07.010 db/journals/dke/dke66.html#KosseimY08