【摘要】 采用4种检索方式(无过滤布尔逻辑、过滤布尔逻辑、无过滤自然语言和过滤自然语言)对7个常见数据库ASP、GS、JSTOR、Lexis Nexis、Pro Quest Central、Pub Med、Scopus和Web of Science检索测试,最后分析了在目前技术环境下,布尔逻辑和自然语言检索相比,哪种方式更加有效。更多还原

【Abstract】 Four retrieval methods( without filtering Boolean logic,filtering Boolean logic,filtering natural language and filtering natural language) were used to test seven common databases ASP,GS,JSTOR,Lexis Nexis,Pro Quest Central,Pub Med,Scopus,and Web of. Finally,it analyzed that in the current technology environment,Boolean logic and natural language search were more effective than those in natural language retrieval.更多还原