摘要
在进行文献检索特别是多关键词文献检索时，现有科学搜索引擎的检索结果排序存在一些问题。本文推导了两关键词加权文献检索的相关度计算公式，在此基础上提出了多关键词组合加权文献检索方法，并与文献年平均被引频次指标相结合，确定综合考虑文献相关度和文献质量的排序分数。最后，通过实例分析验证了该方法的有效性。
While conducting literature retrieval, especially muhi-keyword literature retrieval, there are some problems on ranking the retrieval result of current scientific search engine. In this paper, we deduce the relevance formula of double-keyword weighted literature retrieval, and propose an approach to muhi-keyword combination weighted literature retrieval based on the formula. Combining with the indicator of literature cited frequency per year, we identify the rank score that consider both literature relevance and literature quality. Finally, we verify the validity of the approach through an example analysis.
出处
《情报学报》
CSSCI
北大核心
2006年第4期420-427,共8页
Journal of the China Society for Scientific and Technical Information
关键词
加权文献检索
多关键词组合
年平均被引频次
科学搜索引擎
weighted literature retrieval, multi-keyword combination, cited frequency per year, scientific search engine.
