在因特网中如何查找医学文献资源的探讨

How to Perform Medical Literature Retrieval on Internet

目的:探索利用因特网(Internet)进行医学文献检索的策略。方法:比较医学研究中常用的搜索引擎和文献检索数据库等检索工具的应用技巧,归纳出各种检索工具应用的异同点并以实例演示来说明。结果:谷歌搜索的数据索引上超过百度,但在查准率上明显低于百度;国内几个期刊全文数据库检索能力相当,但中国期刊全文专题数据库功能更丰富;PubMed和Highwire单凭固定的主题词一次检索,尚不能满足检索需要,应充分地使用“相关文献”功能,或者根据研究目的变换检索词,来弥补查全率低的不足;同时,增加检索词,缩小检索范围,提高查准率。结论:在因特网中查找医学文献资源不仅需要熟练掌握检索工具的应用技巧,更需要在实践中总结经验。

Objective：To explore the strategy to search medical literature on Internet. Methods： Frequently used medical literature retrieval tips of searching engine and literature retrieval database were compared completely. Moreover, the common tips and different tips were concluded respectively. Then, we performed a example of medical literature retrieval in order to validate the tips of all retrieval tools. Results： The retrieval results from Google were more than that from Baidu while the precision ratio of Baidu was higher than that of Gongle.The capability of retrieval among CNKI, Wanfang Database and VIP Database were equivalent, but CNKI had more auxiliary functions. PubMed and Highwire could not meet the needs of an ideal retrieval if only a group of keywords were used to search. During retrieval, we need substitute the corresponding free words or synonyms for keywords and used the function ＂Related Articles＂ sufficiently in order to improve recall ratio. At the same tinre, adding searching words could heighten precision ratio. Conclusion： When performing medical retrieval, we should not only master the tips of frequently used searching tools fully, but also gain experience from practice.