Seeing that the keyword or key phrase can represent the feature of text, keyword extraction and filtration has great significance for information retrieval, information extraction and knowledge discovery. This paper first investigates current keyword extraction methods. Then it uses existing thesaurus and tools in the medical field and BM25F model in proposing a method for keyword extraction and filtration from medical texts. The proposed method mainly solves two key problems:identification and extraction of keywords, evaluation of keyword value and filtration of keywords. This paper applies the method on documents in the field of osteoarthritis from the year 2001 to 2007, and verifies its effectiveness, which offers an effective way for extracting keywords in knowledge discovery.
殷蜀梅,张智雄,吴振新. 一种从医学文本中实现自动关键词抽取和筛选的技术方法*[J]. 现代图书情报技术, 2008, 24(8): 31-36.
Yin Shumei,Zhang Zhixiong,Wu Zhenxin. A Method for Automatic Keyword Extraction and Filtration from Medical Texts. New Technology of Library and Information Service, 2008, 24(8): 31-36.
[1] 刘华. 基于文本分类中特征提取的领域词语聚类[J]. 语言文字应用,2007(1):139-144.
[2] Blank G D,Pottenger W M, Kessler C D. CIMEL:Constructive and Collaborative, Inquiry-based Multimedia E-Learning[EB/OL]. [2007-08-01]. http://dimacs.rutgers.edu/~billp/pubs/ITICSE01.pdf.
[3] Porter A L,Detampel M J. Technology Opportunities Analysis[J]. Technological Forecasting and Social Change, 1995,49:237-255.
[4] Essential Science Indicators[EB/OL]. [2007-08-01]. http://www.esi-topics.com/RFmethodology.html.
[5] Swan R, Jensen D. TimeMines:Constructing Timelines with Statistical Models of Word Usage[EB/OL]. [2007-08-01]. http://www.cs.cmu.edu/~dunja/KDDpapers/Swan_TM.pdf.
[6] Lowe HJ, Barnett GO. Remote Access MicroMeSH:A Microcomputer System for Searching MEDLINE[C].In: The Proceedings Annual Symposium on Computer Application in Medical Care, 1988:535-539.
[7] Miller RA, Gieszczykiewicz FM, Vries JK, et al. CHARTLINE:Providing Bibliographic References Relevant to Patient Charts Using the UMLS Metathesaurus Knowledge Sources[C].In:the Proceedings Annual Symposium on Computer Application in Medical Care. 1992:86-90.
[8] Evans DA, Hersh WR, Monarch IA, et al. Automatic Indexing of Abstracts via Natural-language Processing Using a Simple Thesaurus[J]. Medical Decision Making, 1991,11(4):S108-S115.
[9] Gordon M, Holt DG, Panigrahi A, et al. Genome-wide Dynamics of SAPHIRE, an Essential Complex for Gene Activation and Chromatin Boundaries[J]. Molecular and Cellular Biology, 2007,27(11):4058-69.
[10] MMTx[EB/OL]. [2007-08-01]. http://mmtx.nlm.nih.gov/.
[11] Aronson A R. MetaMap Variant Generation[EB/OL]. [2007-08-01]. http://skr.nlm.nih.gov/papers/references/mm.variants.pdf.
[12] Robertson S E, Walker S. Some Simple Effective Approximations to the 2-Poisson Model for Probabilistic Weighted Retrieval[EB/OL]. [2007-08-01]. http://www.computing.dcu.ie/~gjones/Teaching/CA437/p232.pdf.
[13] Robertson S E, Walker S, Jones K S, et al. Okapi at TREC-3[C]. In:Proceedings of 3rd Text Retrieval Conference (TREC-3), 1995, 109-126.
[14] 陆伟. 基于域加权词频法的XML文档级检索实现与评价[J]. 中国图书馆学报, 2006(6):57-60.
[15] de Mattei M, Pellati A, Pasello M, et al. High Doses of Glucosamine-HCl have Detrimental Effects on Bovine Articular Cartilage Explants Cultured in Vitro[J]. Osteoarthritis and Cartilage. 2002,10(10):816-25.