通用搜索引擎与医学搜索引擎的比较研究

设计有代表性的检索提问,将搜索引擎分为A组（医学搜索引擎,n=9),B组（通用搜索引擎,n＝9）,用SPSS8．0统计软件对检索结果进行分析;文献计量学方法用于分析“发热处理”检索结果。通过比较,明确通用搜索引擎和医学搜索引擎在检索不同提问时获得网页内容相关性,网页重复,新颖性及无效链接等方面有无显著性差异;从用户角度对两组搜索引擎查寻专题信息“发热处理”的检索结果进行分析评价。结果表明,医学搜索引擎检出结果的内容相关性不如通用搜索引擎,无效链接百比高于通用搜索引擎;索及网页的更新时效性比通用搜索引擎强,网页重复率较通用搜索引擎低;医学搜索引擎提供“发热处理”信息的质量和完整性不如通用搜索引擎;二者提供的有效信息均较少。以上结果提示,多种搜索引擎联合检索有助于获得较多的有用信息;医学搜索引擎及网页的质量,数据库规模有待改进和提高。

General search engines and medical search engines: a comparative study

Web pages obtained from first 1-20 hits on medical search engines (MSE, as Group A, n=9) and general search engines(GSE, as Group B, n=9) are analyzed by SPSS 8.0 (statistical software) and Chi-square test in order to identify whether there are significant differences among their content relevance, duplicate, novelty, inactive links and so on. Also, the search results on "fever management" obtained from both Group A and Group B in answering user's requirement are evaluated by a bibliometric analysis. The results indicate that the differences are significant (p<0.05). The content relevance and duplicate of web pages obtained from Group A are less than that obtained from Group B, but the percentage of the inactive links of Group A is higher than that of Group B, and the update frequency of Group A is faster than that of Group B. The quality and integrity of information on "fever management" obtained from Group A are lower than that obtained from Group B. But the quantity of information obtained from the two groups is small. The results suggest that more useful information can be obtained by multiple search engines, and the quality of medical search engines and web pages as well as the size of medical databases should be improved.