搜索引擎技术的研究，国外比中国要早近十年，从最早的Archie，到后来的Excite，以及altvista、overture、google等搜索引擎面世，搜索引擎发展至今，已经有十几年的历史，而国内开始研究搜索引擎是在上个世纪末本世纪初。在许多领域，都是国外的产品和技术一统天下，特别是当某种技术在国外研究多年而国内才开始的情况下。例如操作系统、字处理软件、浏览器等等，但搜索引擎却是个例外。虽然在国外搜索引擎技术早就开始研究，但在国内还是陆续涌现出优秀的搜索引擎，像百度、中搜等。目前在中文搜索引擎领域，国内的搜索引擎已经和国外的搜索引擎效果上相差不远。之所以能形成这样的局面，有一个重要的原因就在于中文和英文两种语言自身的书写方式不同，这其中对于计算机涉及的技术就是中文分词。-Search engine technology abroad than in China as early as the past decade, from the earliest Archie, later, Excite, and altvista, overture, google and other search engines available, search engines now have ten years of history, while thethe country began to study the search engine is in the beginning of this century of the last century. In many areas, are foreign products and technology dominate the world, especially in the case when certain technology abroad for many years and has only just begun. Such as operating systems, word processing software, browse more, but the search engine is an exception. Although search engine technology in foreign countries already began to study, but gradually emerged in the country or a good search engine like Baidu in the search. In the field of Chinese search engine, the search engine has the effect of foreign search engines far off. Has been able to form such a situation, one important reason is that the Chinese and English languages ​ ​