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Pere Lluís Huguet Cabot

3 accepted papers

2023

AMRs Assemble! Learning to Ensemble with Autoregressive Models for AMR Parsing

ACL 2023short

In this paper, we examine the current state-of-the-art in AMR parsing, which relies on ensemble strategies by merging multiple graph predictions. Our analysis reveals that the present models often violate AMR structural constraints. To address this issue, we develop a validation method, and show how…

2023

Cross-lingual AMR Aligner: Paying Attention to Cross-Attention

ACL 2023findings

This paper introduces a novel aligner for Abstract Meaning Representation (AMR) graphs that can scale cross-lingually, and is thus capable of aligning units and spans in sentences of different languages. Our approach leverages modern Transformer-based parsers, which inherently encode alignment infor…

2023

Incorporating Graph Information in Transformer-based AMR Parsing

ACL 2023findings

Abstract Meaning Representation (AMR) is a Semantic Parsing formalism that aims at providing a semantic graph abstraction representing a given text. Current approaches are based on autoregressive language models such as BART or T5, fine-tuned through Teacher Forcing to obtain a linearized version of…