中文摘要：

通过研究目前中文分词领域各类分词机制，注意到中文快速分词机制的关键在于对单双字词的识别，在这一思想下，提出了一种快速中文分词机制：双字词-长词哈希机制，通过提高单双字词的查询效率来实现对中文分词机制的改进．实验证明，该机制提高了中文文本分词的效率．

英文摘要：

With the development of global networking through Internet, the amount of articles in Chinese or other native languages is increasing rapidly. As the lack of explicit separator, word segmentation is a precondition for the processing of these character-based languages and thus it affects the whole system in performance. In this paper, we propose a new solution for Chinese word segmentation problem based on Lexicon named double-character-and-long- word-hash-indexing （DCLWHI）. Compared with traditional lexicon mechanism, DCLWHI improves the speed and efficiency of word segmentation without extra memory spending and gains the same accuracy.