word indexing

Finally, this paper gives a brief description of principle of Chinese automatic segmentation techniques. ( 2) Studies candidate keyword extraction, which is one process of the English automatic indexing system, and introduces the concept of the core word set.

最后简要描述了中文自动标引分词技术的几类方法原理。（2）针对英文自动标引系统中的抽取候选关键词这一过程进行研究，引入了核心单词集这一概念。

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In the dictionary matching based Chinese word automatic assignment indexing, there is some difficulty in additional indexing of proper noun.

在以词典匹配为基础的中文自动赋词标引中，存在如何实现专有名词的增词标引问题。

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Finally, do the numerical experiments, and to automatic word extraction indexing accuracy, recall and F integrated indicators and other technical parameters were compared and analyzed.

最后进行了数值实验，并就自动抽词标引实验准确率、召回率和综合指标F等技术参数进行了对比分析。

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First, three common word segmentation dictionary systems and the dictionary system based on double-character-hash-indexing, Patricia tree and four-character-hash-indexing are studied and explored. Some questions are found in these systems and the unreasonable structures are improved.

本文对三种典型的分词词典机制、基于双字哈希的词典机制、基于PAT树的词典机制及四字哈希词典机制进行了探讨与研究，并针对这些机制存在的问题提出了改进措施。

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