Wuying Liu


2016

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How does Dictionary Size Influence Performance of Vietnamese Word Segmentation?
Wuying Liu | Lin Wang
Proceedings of the Tenth International Conference on Language Resources and Evaluation (LREC'16)

Vietnamese word segmentation (VWS) is a challenging basic issue for natural language processing. This paper addresses the problem of how does dictionary size influence VWS performance, proposes two novel measures: square overlap ratio (SOR) and relaxed square overlap ratio (RSOR), and validates their effectiveness. The SOR measure is the product of dictionary overlap ratio and corpus overlap ratio, and the RSOR measure is the relaxed version of SOR measure under an unsupervised condition. The two measures both indicate the suitable degree between segmentation dictionary and object corpus waiting for segmentation. The experimental results show that the more suitable, neither smaller nor larger, dictionary size is better to achieve the state-of-the-art performance for dictionary-based Vietnamese word segmenters.

2015

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Russian-Chinese Sentence-level Aligned News Corpus
Wenjun Du | Wuying Liu | Junting Yu | Mianzhu Yi
Proceedings of the 18th Annual Conference of the European Association for Machine Translation

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Russian-Chinese Sentence-level Aligned News Corpus
Wenjun Du | Wuying Liu | Junting Yu | Mianzhu Yi
Proceedings of the 18th Annual Conference of the European Association for Machine Translation