Efficient probabilistic top-down and left-corner parsing

Brian Roark; Mark Johnson

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arXiv · cs/0008017

Efficient probabilistic top-down and left-corner parsing

Brian Roark·Mark Johnson

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Abstract

This paper examines efficient predictive broad-coverage parsing without dynamic programming. In contrast to bottom-up methods, depth-first top-down parsing produces partial parses that are fully connected trees spanning the entire left context, from which any kind of non-local dependency or partial semantic interpretation can in principle be read. We contrast two predictive parsing approaches, top-down and left-corner parsing, and find both to be viable. In addition, we find that enhancement with non-local information not only improves parser accuracy, but also substantially improves the search efficiency.

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Brian Roark, Mark Johnson. 2000-08-21. Efficient probabilistic top-down and left-corner parsing. https://arxiv.org/abs/cs/0008017

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