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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…

计算与语言 · 计算机科学 2023-06-21 Abelardo Carlos Martínez Lorenzo , Pere-Lluís Huguet Cabot , Roberto Navigli

Abstract Meaning Representations (AMR) are a broad-coverage semantic formalism which represents sentence meaning as a directed acyclic graph. To train most AMR parsers, one needs to segment the graph into subgraphs and align each such…

计算与语言 · 计算机科学 2022-10-26 Chunchuan Lyu , Shay B. Cohen , Ivan Titov

Meaning Representation (AMR) is a graph-based semantic representation for sentences, composed of collections of concepts linked by semantic relations. AMR-based approaches have found success in a variety of applications, but a challenge to…

计算与语言 · 计算机科学 2021-11-30 Fei-Tzin Lee , Chris Kedzie , Nakul Verma , Kathleen McKeown

Generating an abstract from a collection of documents is a desirable capability for many real-world applications. However, abstractive approaches to multi-document summarization have not been thoroughly investigated. This paper studies the…

计算与语言 · 计算机科学 2018-06-15 Kexin Liao , Logan Lebanoff , Fei Liu

Recent studies on AMR-to-text generation often formalize the task as a sequence-to-sequence (seq2seq) learning problem by converting an Abstract Meaning Representation (AMR) graph into a word sequence. Graph structures are further modeled…

计算与语言 · 计算机科学 2019-09-04 Jie Zhu , Junhui Li , Muhua Zhu , Longhua Qian , Min Zhang , Guodong Zhou

Predicting linearized Abstract Meaning Representation (AMR) graphs using pre-trained sequence-to-sequence Transformer models has recently led to large improvements on AMR parsing benchmarks. These parsers are simple and avoid explicit…

计算与语言 · 计算机科学 2021-11-01 Jiawei Zhou , Tahira Naseem , Ramón Fernandez Astudillo , Young-Suk Lee , Radu Florian , Salim Roukos

This work addresses the task of generating English sentences from Abstract Meaning Representation (AMR) graphs. To cope with this task, we transform each input AMR graph into a structure similar to a dependency tree and annotate it with…

计算与语言 · 计算机科学 2017-07-25 Timo Schick

We develop high performance multilingualAbstract Meaning Representation (AMR) sys-tems by projecting English AMR annotationsto other languages with weak supervision. Weachieve this goal by bootstrapping transformer-based multilingual word…

计算与语言 · 计算机科学 2022-05-09 Janaki Sheth , Young-Suk Lee , Ramon Fernandez Astudillo , Tahira Naseem , Radu Florian , Salim Roukos , Todd Ward

This paper presents a survey of Abstract Meaning Representation (AMR), a semantic representation framework that captures the meaning of sentences through a graph-based structure. AMR represents sentences as rooted, directed acyclic graphs,…

计算与语言 · 计算机科学 2025-05-07 Behrooz Mansouri

Abstract meaning representations (AMRs) are broad-coverage sentence-level semantic representations. AMRs represent sentences as rooted labeled directed acyclic graphs. AMR parsing is challenging partly due to the lack of annotated…

计算与语言 · 计算机科学 2018-05-15 Chunchuan Lyu , Ivan Titov

Abstract Meaning Representation parsing is a sentence-to-graph prediction task where target nodes are not explicitly aligned to sentence tokens. However, since graph nodes are semantically based on one or more sentence tokens, implicit…

计算与语言 · 计算机科学 2021-05-19 Jiawei Zhou , Tahira Naseem , Ramón Fernandez Astudillo , Radu Florian

Abstract Meaning Representation (AMR) parsing has experienced a notable growth in performance in the last two years, due both to the impact of transfer learning and the development of novel architectures specific to AMR. At the same time,…

计算与语言 · 计算机科学 2020-10-22 Young-Suk Lee , Ramon Fernandez Astudillo , Tahira Naseem , Revanth Gangi Reddy , Radu Florian , Salim Roukos

We propose neural models to generate high-quality text from structured representations based on Minimal Recursion Semantics (MRS). MRS is a rich semantic representation that encodes more precise semantic detail than other representations…

计算与语言 · 计算机科学 2019-04-29 Valerie Hajdik , Jan Buys , Michael W. Goodman , Emily M. Bender

The ability to understand and generate languages sets human cognition apart from other known life forms'. We study a way of combing two of the most successful routes to meaning of language--statistical language models and symbolic semantics…

计算与语言 · 计算机科学 2022-06-14 Yichao Liang

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,…

AMR-to-text generation is a problem recently introduced to the NLP community, in which the goal is to generate sentences from Abstract Meaning Representation (AMR) graphs. Sequence-to-sequence models can be used to this end by converting…

计算与语言 · 计算机科学 2019-05-22 Marco Damonte , Shay B. Cohen

Sequence-to-sequence models have shown strong performance across a broad range of applications. However, their application to parsing and generating text usingAbstract Meaning Representation (AMR)has been limited, due to the relatively…

计算与语言 · 计算机科学 2017-08-21 Ioannis Konstas , Srinivasan Iyer , Mark Yatskar , Yejin Choi , Luke Zettlemoyer

We introduce a novel scheme for parsing a piece of text into its Abstract Meaning Representation (AMR): Graph Spanning based Parsing (GSP). One novel characteristic of GSP is that it constructs a parse graph incrementally in a top-down…

计算与语言 · 计算机科学 2019-09-13 Deng Cai , Wai Lam

Sentence representations can capture a wide range of information that cannot be captured by local features based on character or word N-grams. This paper examines the usefulness of universal sentence representations for evaluating the…

计算与语言 · 计算机科学 2018-05-22 Hiroki Shimanaka , Tomoyuki Kajiwara , Mamoru Komachi

Although pre-trained contextualized language models such as BERT achieve significant performance on various downstream tasks, current language representation still only focuses on linguistic objective at a specific granularity, which may…

计算与语言 · 计算机科学 2021-01-01 Yian Li , Hai Zhao