Papers › RST Parsing from Scratch

RST Parsing from Scratch

23 May 2021NAACL 2021 4arXiv:2105.10861archive 2025-07-28

Thanh-Tung Nguyen, Xuan-Phi Nguyen, Shafiq Joty, XiaoLi Li

We introduce a novel top-down end-to-end formulation of document-level discourse parsing in the Rhetorical Structure Theory (RST) framework. In this formulation, we consider discourse parsing as a sequence of splitting decisions at token boundaries and use a seq2seq network to model the splitting decisions. Our framework facilitates discourse parsing from scratch without requiring discourse segmentation as a prerequisite; rather, it yields segmentation as part of the parsing process. Our unified parsing model adopts a beam search to decode the best tree structure by searching through a space of high-scoring trees. With extensive experiments on the standard English RST discourse treebank, we demonstrate that our parser outperforms existing methods by a good margin in both end-to-end parsing and parsing with gold segmentation. More importantly, it does so without using any handcrafted features, making it faster and easily adaptable to new languages and domains.

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Code

tungngthanh/rst_parser officialpytorch report

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Tasks

Discourse ParsingDiscourse SegmentationEnd-to-End RST ParsingSegmentation

Results from the paper archive 2025-07-28

TaskDatasetModelMetricValueRank at snapshotLeaderboardReport
Discourse Parsing RST-DT End-to-end Top-down (XLNet) RST-Parseval (Nuclearity) 76.0 #17 of 40 Archive leaderboard report
Discourse Parsing RST-DT End-to-end Top-down (XLNet) RST-Parseval (Relation) 61.8 #17 of 40 Archive leaderboard report
Discourse Parsing RST-DT End-to-end Top-down (XLNet) RST-Parseval (Span) 87.6 #17 of 40 Archive leaderboard report
Discourse Parsing RST-DT End-to-end Top-down (XLNet) Standard Parseval (Full) 50.2 #17 of 40 Archive leaderboard report
Discourse Parsing RST-DT End-to-end Top-down (XLNet) Standard Parseval (Nuclearity) 64.3 #17 of 40 Archive leaderboard report
Discourse Parsing RST-DT End-to-end Top-down (XLNet) Standard Parseval (Relation) 51.6 #17 of 40 Archive leaderboard report
Discourse Parsing RST-DT End-to-end Top-down (XLNet) Standard Parseval (Span) 74.3 #17 of 40 Archive leaderboard report
Discourse Parsing RST-DT End-to-end Top-down (Glove) Standard Parseval (Full) 46.8 #21 of 40 Archive leaderboard report
Discourse Parsing RST-DT End-to-end Top-down (Glove) Standard Parseval (Nuclearity) 59.6 #21 of 40 Archive leaderboard report
Discourse Parsing RST-DT End-to-end Top-down (Glove) Standard Parseval (Relation) 47.7 #21 of 40 Archive leaderboard report
Discourse Parsing RST-DT End-to-end Top-down (Glove) Standard Parseval (Span) 71.1 #21 of 40 Archive leaderboard report
End-to-End RST Parsing RST-DT Nguyen et al. (2021) Standard Parseval (Full) 46.6 #4 of 4 Archive leaderboard report
End-to-End RST Parsing RST-DT Nguyen et al. (2021) Standard Parseval (Nuclearity) 59.1 #4 of 4 Archive leaderboard report
End-to-End RST Parsing RST-DT Nguyen et al. (2021) Standard Parseval (Relation) 47.8 #4 of 4 Archive leaderboard report
End-to-End RST Parsing RST-DT Nguyen et al. (2021) Standard Parseval (Span) 68.4 #4 of 4 Archive leaderboard report

Ranks are positions in the archive's leaderboards as they stood at the 2025-07-28 snapshot. Results published since then are not among these rows, so a rank here is not a current standing.

Methods

LSTMSeq2SeqSigmoid ActivationTanh Activation

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