TASK	DATASET	MODEL	METRIC NAME	METRIC VALUE	GLOBAL RANK
Dependency Parsing	Penn Treebank	Graph-based parser with GNNs	POS	97.3	# 5
Dependency Parsing	Penn Treebank	Graph-based parser with GNNs	UAS	95.97	# 12
Dependency Parsing	Penn Treebank	Graph-based parser with GNNs	LAS	94.31	# 12

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Graph-based Dependency Parsing with Graph Neural Networks

ACL 2019 · Tao Ji, Yuanbin Wu, Man Lan ·

We investigate the problem of efficiently incorporating high-order features into neural graph-based dependency parsing. Instead of explicitly extracting high-order features from intermediate parse trees, we develop a more powerful dependency tree node representation which captures high-order information concisely and efficiently. We use graph neural networks (GNNs) to learn the representations and discuss several new configurations of GNN{'}s updating and aggregation functions. Experiments on PTB show that our parser achieves the best UAS and LAS on PTB (96.0{\%}, 94.3{\%}) among systems without using any external resources.

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