CMU at SemEval-2016 Task 8: Graph-based AMR Parsing with Infinite Ramp Loss
Jeffrey Flanigan, Chris Dyer, Noah A. Smith, Jaime Carbonell. SemEval 2016
We present improvements to the JAMR parser as part of the SemEval 2016 Shared Task 8 on AMR parsing. The major contributions are: improved concept coverage using external resources and features, an improved aligner, and a novel loss function for structured prediction called infinite ramp, which is a generalization of the structured SVM to problems with unreachable training instances.