Aronson A R, Rindflesch T C
National Library of Medicine, Bethesda, MD 20894, USA.
Proc AMIA Annu Fall Symp. 1997:485-9.
Recent work has demonstrated the importance of query expansion for improving retrieval effectiveness when applying statistically-based systems to MEDLINE citations. The research has suggested the use of retrieval feedback for enhancing the original text of users' queries. As an alternative method of query expansion, we propose the use of the MetaMap program for associating UMLS Metathesaurus concepts with the original query. Our experiments show that query expansion based on MetaMap compares favorably with retrieval feedback. We conclude that the optimal strategy would be to combine the two techniques.
最近的研究表明，在将基于统计的系统应用于MEDLINE引文时，查询扩展对于提高检索效率至关重要。该研究建议使用检索反馈来增强用户查询的原始文本。作为查询扩展的一种替代方法，我们建议使用MetaMap程序将UMLS元词表概念与原始查询相关联。我们的实验表明，基于MetaMap的查询扩展与检索反馈相比具有优势。我们得出结论，最佳策略是将这两种技术结合起来。
