EMNLP Findings2020
The Role of Reentrancies in Abstract Meaning Representation Parsing
Marco Damonte, Ida Szubert, Shay B. Cohen, Mark Steedman
摘要
Meaning Representation (AMR) parsing aims at converting sentences into AMR representations. These are graphs and not trees because AMR supports reentrancies (nodes with more than one parent). Following previous findings on the importance of reentrancies for AMR, we empirically find and discuss several linguistic phenomena responsible for reentrancies in AMR, some of which have not received attention before. We categorize the types of errors AMR parsers make with respect to reentrancies. Furthermore, we find that correcting these errors provides an increase of up to 5% Smatch in parsing performance and 20% in reentrancy prediction.
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