Analyzing Sentence Structure
Analyzing Sentence Structure
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分析句子结构
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
C. R. Worthington
中科院分区：
文献类型：
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作者：
C. R. Worthington
前面的章节集中在单词上：如何识别它们，分析它们的结构，将它们分配到词汇类别，并获取它们的含义。我们还了解了如何识别单词序列或n元语法中的模式。然而，这些方法只是触及了支配句子的复杂约束的表面。我们需要一种方法来处理自然语言所特有的模糊性。我们还需要能够科普这样一个事实，即可能的句子数量是无限的，我们只能编写有限的程序来分析它们的结构并发现它们的含义。
Earlier chapters focused on words: how to identify them, analyze their structure, assign them to lexical categories, and access their meanings. We have also seen how to identify patterns in word sequences or n-grams. However, these methods only scratch the surface of the complex constraints that govern sentences. We need a way to deal with the ambiguity that natural language is famous for. We also need to be able to cope with the fact that there are an unlimited number of possible sentences, and we can only write finite programs to analyze their structures and discover their meanings.