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159 Towards a Multi-Representational Treebank

By Fei Xia, Rajesh Bhatt, Owen Rambow, Martha Palmer and Dipti Misra Sharma


Computational, descriptive, and theoretical linguistics use both phrase (PS) structure and dependency structure (DS) to represent syntax. We believe that the next-generation treebank should be multi-representational, designed for both representations with an automatic conversion. In this paper, we highlight the assumptions made by existing PS-to-DS and DS-to-PS conversion algorithms and show the limitations of these algorithms. We then propose a new DS-to-PS conversion algorithm that outperforms existing algorithms and allows more flexibility. Our experiments and error analysis show that high-quality DS-to-PS conversion is possible if the conversion process is performed at the designing stage of treebank construction to ensure that all information we wish to represent in PS is provided in DS.

Year: 2010
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