Framework of Semantic Role Assignment based on Extended Lexical Conceptual Structure: Comparison with VerbNet and FrameNet
Yuichiroh Matsubayashi, Yusuke Miyao, Akiko Aizawa · 2012
Widely accepted resources for semantic parsing, such as PropBank and FrameNet, are not perfect as a semantic role label-ing framework. Their semantic roles are not strictly defined; therefore, their mean-ings and semantic characteristics are un-clear. In addition, it is presupposed that a single semantic role is assigned to each syntactic argument. This is not necessarily true when we consider internal structures of verb semantics. We propose a new frame-work for semantic role annotation which solves these problems by extending the the-ory of lexical conceptual structure (LCS). By comparing our framework with that of existing resources, including VerbNet and FrameNet, we demonstrate that our ex-tended LCS framework can give a formal definition of semantic role labels, and that multiple roles of arguments can be repre-sented strictly and naturally. 1