Non-Projective Dependency Parsing with Non-Local Transitions

Daniel Fernández-González; Carlos Gómez-Rodríguez

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arXiv · 1710.09340

Non-Projective Dependency Parsing with Non-Local Transitions

Daniel Fernández-González·Carlos Gómez-Rodríguez

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Abstract

We present a novel transition system, based on the Covington non-projective parser, introducing non-local transitions that can directly create arcs involving nodes to the left of the current focus positions. This avoids the need for long sequences of No-Arc transitions to create long-distance arcs, thus alleviating error propagation. The resulting parser outperforms the original version and achieves the best accuracy on the Stanford Dependencies conversion of the Penn Treebank among greedy transition-based algorithms.

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Daniel Fernández-González, Carlos Gómez-Rodríguez. 2017-10-25. Non-Projective Dependency Parsing with Non-Local Transitions. https://arxiv.org/abs/1710.09340

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