搜索引擎已成为当前网络信息检索的重要工具，现对几种重要的搜索引擎作一综合全面的对比分析。一、检索提问几乎所有论述搜索引擎的文献都将焦点置于自然语言智能搜索、结果文献的相关性排序以及数据库的全面性这三个方面。但第一个领域的杰出软件尚不发达，网络检索的研... Search engine has become an important tool for the current network information retrieval, now several major search engines to make a comprehensive and comprehensive comparative analysis. First, search questions Almost all the literature on search engine will focus on natural language intelligent search, the relevance of the results of the literature and the comprehensiveness of these three aspects of the database. But the first area of ​​outstanding software is not yet developed, web search research ...