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电子学报  2013 

基于配价结构和语义依存关系的句法分析统计模型

DOI: 10.3969/j.issn.0372-2112.2013.10.025, PP. 2029-2034

Keywords: 配价结构,语义依存关系,中心词驱动,句法分析统计模型

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Abstract:

目前主流的词汇化句法分析方法仅仅考虑词语之间的语义依存关系,而没有引入语义搭配和语义类等语义信息."配价"是词语的一个比较本质的特点,一旦一个词语的配价结构确定下来,它应该和怎样的词进行搭配也就比较清楚了,从而也可以比较直接地导出句子的结构.本文结合中心词驱动句法分析模型,提出了基于配价结构和语义依存关系的句法分析模型.模型在规则的分解及概率计算中引入丰富的语义信息,既包括语义依存信息,也包括配价结构等语义搭配信息.用改进的句法分析模型进行句法分析实验,实验结果表明,精确率和召回率分别为88.76%和87.43%,综合指标F值比Collins的中心词驱动句法分析模型提高了6.65个百分点.

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