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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:2014-08-07编辑:lgg点击率:4326
论文字数:36200论文编号:org201408051152243530语种:英语 English地区:中国价格:$ 66
摘要:本文是英语词汇学论文。本文采用数学方法即形式概念分析法,来凸显出英语介词over语义排歧及语境特征互动关系。formal concept analysis Therefore, this paper adopts the mathematical approach, namely formal concept analysis, to computationally distinguish the meanings of preposition over and further discusses how the contextual features interact with each other.
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Conclusion
This paper constructs the WSD model by using formal concept analysis and bases themodel to explore the interactions between contextual features. The major findings arediscovered as follows:First of all, by the approach and the theory of formal concept analysis, the WSD modelof the English preposition over has been constructed. On the basis of the WSD model, thetwo testing sets are examined and the accuracy of disambiguation of over reaches 93%. Itindicates that the model constructed by formal concept analysis can disambiguate thesenses of over and achieve good results. But in order to avoid the problem of datasparseness, we put one training set and two testing sets all together and constitutes a largerdata. Another WSD model of over have been constructed in the same way. The accuracyof the model reaches 97.55%. It shows that this model can reach higher accuracy than theprevious model. It indicates that when the data set contains the more samples, the morepatterns would be extracted from the WSD model, so the model could get the higheraccuracy. The two models can lay the foundations for studying other semantic complicatedprepositions.
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