计算机联机和网络检索

null计算机联机与网络信息检索计算机联机与网络信息检索null 计算机信息检索是指检索人员在计算机或计算机网络终端上,根据用户或课题的需要,使用特定的检索指令,利用检索逻辑关系,由机器从存贮文献信息的数据库中检出所需信息的过程。 计算机联机信息检索是指信息用户利用检索系统网络的终端设备,通过通讯线路,运用一定指令和检索策略与计算机数据库进行人机对话,从中查找所需信息并将检索过程与结果显示或打印出来的过程。文档类型 I文档类型 I文档类型 II文档类型 II浏览器浏览器阅读器阅读器Internet 结构Internet 结构Internet 协议模型（TCP/IP）Internet 协议模型（TCP/IP）HostHostApplication ProtocolApplication ProtocolURL, URN, URIURL, URN, URIPortsPortsSocketsSocketsHTTP 方法（GET&POST）HTTP 方法（GET&POST）网络电子文献查询网络电子文献查询馆藏书目查询（图书）馆藏书目查询（期刊）CNKI科技论文查询CNKI学位论文查询VIP科技论文查询超星数字图书馆中国国家查询EBSCO ASP搜索引擎的一般结构搜索引擎的一般结构Clawer机制Clawer机制Google ArchitecturesGoogle ArchitecturesGoogle Result PageGoogle Result PageGoogle Web Search Basics IGoogle Web Search Basics IPhrase Searches to be or not to be “to be or not to be”Basic Boolean snowblower Honda "Green Bay" snowblower OR snowmobile OR "Green Bay" snowblower (snowmobile OR "Green Bay") snowblower snowmobile -"Green Bay" Explicit Inclusion +the king Google Web Search Basics IIGoogle Web Search Basics IISynonyms ~ape monkey, gorilla, chimpanzee Number Range prada pumps size 5..6 digital camera 3..5 megapixel $800..1000 Feeling Lucky presidentWildcard "do as * say not as * do" Special Syntax ISpecial Syntax Iintitle: intitle:"george bush" allintitle:"money supply" economics intext: intext:"yahoo.com" allintext: “yahoo.com” “ibm.com” inanchor: inanchor:"tom peters" site: site:loc.gov site:edu Special Syntax IISpecial Syntax IIinurl: inurl:help allinurl:search help link: link:www.google.com cache: cache:www.yahoo.com daterange: "Spice Girls" daterange:2450958-2450968 filetype: homeschooling filetype:pdf "leading economic indicators" filetype: Special Syntax IIISpecial Syntax IIIrelated: related:google.com info: info:www.oreilly.com phonebook: phonebook:John Doe CA phonebook:(510) 555-1212 define: define:urlAdvanced SearchAdvanced SearchImage SearchImage SearchGoogle MapGoogle Map