网络环的境下.pdf

第22卷第3期 V o l 22, N o 3 　 　 情　报　科　学 　 　 2004 年 3月 M arch , 2004 网络环境下, 国外专利的有偿、无偿信息源的比较研究 顾震宇　林　鹤 (上海图书馆上海科学技术情报研究所, 上海 200031) 摘　要　本文通过对网络环境下专利的有偿信息源和无偿信息源的剖析, 介绍了它们各自的优势和弱点, 从 检索入口、检索指令、数据质量、数据库收录量、可靠性、检索结果以及检索成本等多个方面进行了对比。通 过对比分析, 得出结论, 并介绍了一种结合两种信息源优点、避免各自的缺点, 进行有效的专利检索的方法。 关键词　国外专利　有偿信息源　无偿信息源　检索 中图分类号　 354　　　　文献标识码　 　　　　文章编号 (2004) G A Com par ison Research of Pa id Unpa id Informa tion Sources of Fore ign Pa ten ts under Network Env ironm en t 　 Gu Zhenyu L in H e (ShanghaiL ibrary Institute of Scientific and T echnical Info rm ation of Shanghai, Shanghai 200031) 　 Abstract T he autho rs dissect paid unpaid info rm ation sources of fo reign patents under netw o rk environm ent, and analyze their strength s and w eaknesses respectively, fo llow ed w ith comparison on retrieval , , , , , . , entrances comm ands data quality reliability file size search results and co sts etc F inally the autho rs exp ress their comm ents based on their study, and suggest an efficient m ethod fo r search ing patents from these tw o info rm ation sources in the w ay of strengthening their advantages and avo iding their sho rtcom ings respectively. Keywords　Fo reign patents　Payable paid info rm ation sources　F ree info rm ation sources　R etrieval