目前,我们在搜索时,都是先告诉搜索引擎“关键字”,然后搜索引擎返回所有找到的含有该关键字的网页。可以说,现在的搜索引擎已经达到了准确和广泛两个要求,但它提供给我们的仅仅只是一大堆毫无关联性、也没有主次分级的网页的简单罗列。用户还需要耗费大量时间和精力,对这一堆信息进行人工二次筛选,才能在这一片”湖”(互联网是海)中挑选出真正对自己有用的信息。当然,搜索高手可以利用精巧的关键字组合来大大提高搜索的成功率。,但我们不能指望每个人都 At the moment, when we search, we tell the search engine “keywords” first, and then the search engine returns all the pages we found that contain that keyword. It can be said that today’s search engine has reached both accurate and broad requirements, but it provides us with only a lot of unrelated, there is no primary and secondary classified pages simply listed. Users also need to spend a lot of time and energy, a second manual screening of this pile of information, in this piece of “lake” (the Internet is the sea) pick out really useful information for yourself. Of course, search masters can use sophisticated keyword combinations to dramatically improve search success rates. But we can not count on everyone