The feasibility of automatically identifying outcome statements in secondary sources has been demonstrated by Niu and Hirst ( 2004 ) .
analysis of semantic classes in medical text for question answering
Yun Niu Graeme Hirst
The work of Hearst ( 1996 ) demonstrates that faceted queries can be converted into simple filtering constraints to boost precision . The feasibility of automatically identifying outcome statements in secondary sources has been demonstrated by Niu and Hirst ( 2004 ) . Their study also illustrates the importance of semantic classes and relations .
The feasibility of automatically identifying outcome statements in secondary sources has been demonstrated by @@CITATION .