Search Results for author: Nan Yu

Found 8 papers, 5 papers with code

RST Discourse Parsing with Second-Stage EDU-Level Pre-training

1 code implementation ACL 2022 Nan Yu, Meishan Zhang, Guohong Fu, Min Zhang

Pre-trained language models (PLMs) have shown great potentials in natural language processing (NLP) including rhetorical structure theory (RST) discourse parsing. Current PLMs are obtained by sentence-level pre-training, which is different from the basic processing unit, i. e. element discourse unit (EDU). To this end, we propose a second-stage EDU-level pre-training approach in this work, which presents two novel tasks to learn effective EDU representations continually based on well pre-trained language models. Concretely, the two tasks are (1) next EDU prediction (NEP) and (2) discourse marker prediction (DMP). We take a state-of-the-art transition-based neural parser as baseline, and adopt it with a light bi-gram EDU modification to effectively explore the EDU-level pre-trained EDU representation. Experimental results on a benckmark dataset show that our method is highly effective, leading a 2. 1-point improvement in F1-score. All codes and pre-trained models will be released publicly to facilitate future studies.

Discourse Marker Prediction Discourse Parsing +1

Discourse-Aware Emotion Cause Extraction in Conversations

no code implementations26 Oct 2022 Dexin Kong, Nan Yu, Yun Yuan, Guohong Fu, Chen Gong

In this paper, we investigate the importance of discourse structures in handling utterance interactions and conversationspecific features for ECEC.

Causal Emotion Entailment Discourse Parsing +2

Robust numerical computation of the 3D scalar potential field of the cubic Galileon gravity model at solar system scales

1 code implementation2 Mar 2020 Nicholas C. White, Sandra M. Troian, Jeffrey B. Jewell, Curt J. Cutler, Sheng-wey Chiow, Nan Yu

Here we present a numerical method based on finite differences for solution of the static CGG scalar field for a 2D axisymmetric Sun-Earth system and a 3D Cartesian Sun-Earth-Moon system.

Computational Physics

Joint POS Tagging and Dependency Parsing with Transition-based Neural Networks

no code implementations25 Apr 2017 Liner Yang, Meishan Zhang, Yang Liu, Nan Yu, Maosong Sun, Guohong Fu

While part-of-speech (POS) tagging and dependency parsing are observed to be closely related, existing work on joint modeling with manually crafted feature templates suffers from the feature sparsity and incompleteness problems.

Dependency Parsing Part-Of-Speech Tagging +2

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