... Ed-inburgh, U.K.Tang, Jie and Hong, MingCai and Li, Juan-Zi andLiang, Bangyong. 2006. Tree-Structured Con-ditional Random Fields for Semantic Annotation.Proceedgins of the International Semantic WebConference, ... discussed in (Johnson, 1998), an importantpoint for a parsing algorithm is the representationof trees being parsed. Changing the tree represen-tation can change significantly the performancesof ... rigidity and accuracy usingthe same label for all entity fillers, but still distin-guishing between fillers found in entity structuresand other fillers found in words not instantiatingany entity.6.3.3...