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论文作者:www.51lunwen.org论文属性:硕士毕业论文 thesis登出时间:2016-06-23编辑:lgg点击率:6021
论文字数:39273论文编号:org201606201509102526语种:英语 English地区:中国价格:$ 66
摘要:本文是英语毕业论文,本文基于形式概念分析的理论和方法,研究时、体、态与情态动词 must 语义的关系及其对情态动词 must 语义的限制作用。旨在发现相关知识,为情态语义研究和自然语言处理研究提供有价值的依据。
This experiment will extract disambiguation rules from a training set, while the rules should be tested before conclusions are made. If rules extracted from the typical samples of the training set can be applied to the testing set, the rules are meaningful and useful for WSD. For this reason, one training set and one testing set need to be built. Four modal senses of must have to be covered in both sets. After removing duplicates of senses of must in the corpus, 157 samples are extracted consisting of 51 NECmust, 51 POSmust, 35 INSmust and 20 PERmust. Samples of four senses of must are not randomly chose. Above all, the senses must be selected according to a certain proportion. The building of the training set must go ahead of the testing set. In the process of establishing the training set, typical samples can be selected. Whereas it is not allowed to deliberately choose samples to build the testing set. What is more, data in the testing set must be independent of those in the training set. When it comes to the testing set, not a sample can be the same with that of the training set, or the WSD accuracy would be fairly high. As to the meaning of permission which has the least samples, when the training set is constructed, the remaining samples are regarded as samples of the testing set.
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