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1.
Fikar CR 《Medical reference services quarterly》2003,22(4):13-19
This paper discusses concepts and terminology of some aspects of the autoimmune and rheumatic disorders as related to medical reference work. Details of anatomic, biochemical, and pathologic processes are not discussed. Knowledge of the specific terminology involved in this area may help to ensure a good approach to developing prudent strategies for database searching of the medical literature and, therefore, is reviewed. MeSH thesaurus terms are shown and textword synonyms are presented that provide tools for thorough searching techniques. Commonly used medical jargon as well as older terminology for this area is also explained. Examples of specific search strategies are illustrated. 相似文献
2.
A M Cain 《Bulletin of the Medical Library Association》1969,57(3):250-259
This paper describes the construction of a synonym thesaurus or entry vocabulary for the SUNY Biomedical Communication Network, which will permit the user greater ease of access to the MeSH-indexed material without previously consulting a printed list of indexing terms. In order to discover the actual terminology used by a researcher, words were extracted from titles of articles appearing in Index Medicus, and compared with the subject heading under which they appeared. As well as strict synonyms, grammatical variants were also included. Work is continuing on relating other indexing vocabularies, such as Excerpta Medica and Current Medical Terminology, used in the biomedical world to MeSH terms. 相似文献
3.
Fikar CR 《Medical reference services quarterly》2006,25(1):27-36
This paper discusses concepts and terminology of some aspects of disorders of hemostasis (stopping bleeding) and thrombosis (blood clotting) as it relates to medical reference work. Details of anatomic, biochemical, and pathologic processes are not discussed. Specific terminology involved in this area will be reviewed in order to help ensure a good approach to developing prudent strategies for database searching of the medical literature. MeSH thesauri terms are discussed and text word synonyms are presented that provide tools for thorough searching techniques. Examples of specific search strategies are illustrated. 相似文献
4.
Fikar CR 《Medical reference services quarterly》2004,23(3):33-38
This paper discusses concepts and terminology of some aspects of infections of the central nervous system as it relates to medical reference work. Details of anatomic, biochemical, and pathologic processes are not discussed. Specific terminology involved in this area will be reviewed in order to help ensure a good approach to developing prudent strategies for database searching of the medical literature. MeSH thesauri terms are discussed and text word synonyms are presented that provide tools for thorough searching techniques. Commonly used medical jargon for this area is also explained. Examples of specific search strategies are illustrated. 相似文献
5.
Fikar CR 《Medical reference services quarterly》2003,22(3):15-22
This paper discusses concepts and terminology of some aspects of the laboratory diagnosis of liver (hepatic) disease and biliary tract disease (hepatobiliary disease) as it relates to medical reference work. Details of anatomic, biochemical, and pathologic processes are not discussed. Knowledge of the specific terminology involved in this area may help to ensure a good approach to developing prudent strategies for database searching of the medical literature and therefore is reviewed. MeSH and EMBASE thesauri terms are discussed and textword synonyms are presented that provide tools for thorough searching techniques. Commonly used medical jargon for this area is also explained. Examples of specific search strategies are illustrated. 相似文献
6.
本研究对MEDLINE中生物体类文献中高频主要主题词进行共词聚类分析,获取主题词之间的关联规则,利用UMLS语义关系进行结构化表达.从MEDLINE中选取<中华医学杂志>上的生物体类文献作为测试集,由专家人工抽取关系,与共词聚类得到的关联规则进行比较.利用共词聚类分析对生物体类主题词关系的挖掘及评价分析,为文本知识发现提供了一种新的尝试. 相似文献
7.
Douyère M Soualmia LF Névéol A Rogozan A Dahamna B Leroy JP Thirion B Darmoni SJ 《Health information and libraries journal》2004,21(4):253-261
The amount of health information available on the Internet is considerable. In this context, several health gateways have been developed. Among them, CISMeF (Catalogue and Index of Health Resources in French) was designed to catalogue and index health resources in French. The goal of this article is to describe the various enhancements to the MeSH thesaurus developed by the CISMeF team to adapt this terminology to the broader field of health Internet resources instead of scientific articles for the medline bibliographic database. CISMeF uses two standard tools for organizing information: the MeSH thesaurus and several metadata element sets, in particular the Dublin Core metadata format. The heterogeneity of Internet health resources led the CISMeF team to enhance the MeSH thesaurus with the introduction of two new concepts, respectively, resource types and metaterms. CISMeF resource types are a generalization of the publication types of medline. A resource type describes the nature of the resource and MeSH keyword/qualifier pairs describe the subject of the resource. A metaterm is generally a medical specialty or a biological science, which has semantic links with one or more MeSH keywords, qualifiers and resource types. The CISMeF terminology is exploited for several tasks: resource indexing performed manually, resource categorization performed automatically, visualization and navigation through the concept hierarchies and information retrieval using the Doc'CISMeF search engine. The CISMeF health gateway uses several MeSH thesaurus enhancements to optimize information retrieval, hierarchy navigation and automatic indexing. 相似文献
8.
[目的/意义]针对目前医学领域基于主题的语义相似度计算研究较少,尚不足以揭示主题间在语义层面的关系,提出一套用于主题间语义相似度计算的方法,进而从语义角度判断主题间关系,为主题新颖性判断、主题关联研究等提供参考。[方法/过程]以MeSH词表为语义计算的基础,剖析词表结构与现有研究成果,从入口词、语义距离、注释3个维度综合测度主题间的语义相似度,利用PubMed中2011-2014年干细胞领域的文献进行实证研究。[结果/结论]利用通用验证主题词对,验证了本文所提3个测度维度的有效性。通过主题间语义相似度的计算,发现干细胞领域2011-2014年较为新颖的主题为未成年人干细胞研究。后续研究中还需融入基于统计的主题相似度,从而更加全面地揭示主题间的关系,发现语义层面领域的新颖性研究主题。 相似文献
9.
应用改进的共词聚类法探索医学信息学热点主题演变 总被引：4，自引：0，他引：4
对传统的共词聚类方法进行完善:依据高频低频词界分公式选取高频词;计算粘合力确定每个类别的中心词;对比分析两个时间段,发现主题演变。以医学信息学为例,从PubMed数据库分别下载1999年-2003年和2004年-2008年该学科相关文献,提取主要主题词,进行共词聚类分析,探索医学信息学学科结构的演变过程。 相似文献
10.
《Medical reference services quarterly》2013,32(1):49-66
This paper examines the terminology introduced in the Third Edition of the Diagnostic and Statistical Manual (DSM-111) of the American Psychiatric Association in relation to the thesaurus terms available in Medical Subject Headings (MeSH) and The Thesaurus of Psychological Index Terms. 相似文献
11.
12.
近十年国外对中草药研究的关注点——基于高频主题词的共现聚类分析 总被引：1，自引：0，他引：1
目的:调查国外作者发表的中草药研究文献, 分析国外作者对中草药研究的关注点.方法:对PubMed数据库中近10年由国外作者发表的有关中草药的文献进行主题词共现聚类分析, 下载这些文献的主题词并统计主题词出现的频次,截取高频主题词,形成主题词共现矩阵,对矩阵做聚类.通过分析各类的文献内容,得到该主题的研究热点.结果:共检出国外作者发表的论文2 609篇,出现频次超过20次的主题词为43个,聚类得到5个研究热点.结论:①中药抗炎免疫药理、植物型抗肿瘤药物药理、中药抗氧化作用药理以及中药制剂作为神经保护药的药理学研究、黄酮类化合物和生物碱类的药理学研究是中草药药理学研究的关注点;②糖尿病、哮喘等疾病是国外进行中草药治疗应用研究的热点病种;③含马兜铃酸中药的肾脏毒性研究和中草药引起中毒性肝炎的研究是中草药副作用研究的热点;④植物型抗肿瘤药物用于治疗前列腺癌的研究曾受到国外研究人员极大关注;⑤人参属等药用植物的化学成分和人参皂苷药理活性研究受到关注. 相似文献
13.
以引文上下文为研究对象,探讨来自于引文上下文、目标文献摘要以及目标文献自标医学主题词（下称主题词）三者间的符合程度,定量分析引文上下文在表征目标文献内容特征时的作用。以被Circulation杂志高频引证的5篇研究类论文作为目标文献,提取其施引文献的全部引文上下文,并对其进行分词及主题词匹配;将其结果与目标文献摘要提取的主题词以及文献自标的主题词进行两两比较。结果表明,引文上下文与目标文献摘要具有较高的符合度,而且在表征被引文献内容特征的效果上明显具有优势。 相似文献
14.
Objective:This study compares two maps of biomedical sciences using Medical Subject Headings (MeSH) term co-assignments versus MeSH terms of citing/cited articles and reveals similarities and differences between the two approaches.Methods:MeSH terms assigned to 397,475 journal articles published in 2015, as well as their 4,632,992 cited references, were retrieved from Web of Science and MEDLINE databases, respectively, which formed over 7 million MeSH co-assignments and nearly 18 million direct citation pairs. We generated six network visualizations of biomedical science at three levels using Gephi software based on these MeSH co-assignments and citation pairs.Results:The MeSH co-assignment map contained more nodes and edges, as MeSH co-assignments cover all medical topics discussed in articles. By contrast, the MeSH citation map contained fewer but larger nodes and wider edges, as citation links indicate connections to two similar medical topics.Conclusion:These two types of maps emphasize different aspects of biomedical sciences, with MeSH co-assignment maps focusing on the relationship between topics in different categories and MeSH direct citation maps providing insights into relationships between topics in the same or similar category. 相似文献
15.
M E Funk 《Bulletin of the Medical Library Association》1978,66(2):223-227
Hospital physicians naturally require current medical information in order to treat their patients. An objectively obtained SDILINE storesearch was devised to obtain this information. A rank-ordered list of hospital discharge diagnoses, coded with ICDA terms, was translated into MeSH. The top two Bradford zones of journals defined as useful at the University of Missouri--Kansas City were ANDed to these MeSH terms. Citations retrieved from the storesearch are input into an in-house computerized data base. The method can be easily used by other medical or hospital libraries without access to computers. 相似文献
16.
Applications of informatics in veterinary medicine 总被引：3，自引：0，他引：3
This study used the peer-reviewed biomedical literature to define the veterinary informatics knowledgebase and associated subspecialties, and assesses the level of activity in the field over the thirty-year period from 1966 through 1995. Grateful Med was used to search the MEDLINE bibliographic database for articles that shared one or more Medical Subject Headings (MeSH) keywords from the veterinary and medical informatics subject headings. Each of ninety-five MeSH medical informatics terms was assigned to one of twelve veterinary informatics subspecialties. The number of articles retrieved by each MeSH keyword and subspecialty was calculated. A total of 611 articles were retrieved, representing the contributions of 1,338 authors published in 153 journals. The field experienced slow growth over the twenty-year period from 1966 through 1985. In the following decade, the cumulative number of veterinary informatics articles almost tripled and the percentage of veterinary-related articles that included an informatics component increased almost two-and-one-half fold. Despite this recent growth, the number of veterinary-related articles with an informatics component has never exceeded 1% of either the veterinary or medical informatics literature over the past thirty years, and representation of veterinary subspecialties in the literature varied widely. 相似文献
17.
This paper investigates the effectiveness of using MeSH® in PubMed through its automatic query expansion process: Automatic Term Mapping (ATM). We run Boolean searches based on a collection of 55 topics and about 160,000 MEDLINE® citations used in the 2006 and 2007 TREC Genomics Tracks. For each topic, we first automatically construct a query by selecting keywords from the question. Next, each query is expanded by ATM, which assigns different search tags to terms in the query. Three search tags: [MeSH Terms], [Text Words], and [All Fields] are chosen to be studied after expansion because they all make use of the MeSH field of indexed MEDLINE citations. Furthermore, we characterize the two different mechanisms by which the MeSH field is used. Retrieval results using MeSH after expansion are compared to those solely based on the words in MEDLINE title and abstracts. The aggregate retrieval performance is assessed using both F-measure and mean rank precision. Experimental results suggest that query expansion using MeSH in PubMed can generally improve retrieval performance, but the improvement may not affect end PubMed users in realistic situations. 相似文献
18.
Lora V. Gault Mary Shultz Kathy J. Davies 《Journal of the Medical Library Association》2002,90(2):173-180
Objectives: This study compared the mapping of natural language patron terms to the Medical Subject Headings (MeSH) across six MeSH interfaces for the MEDLINE database.Methods: Test data were obtained from search requests submitted by patrons to the Library of the Health Sciences, University of Illinois at Chicago, over a nine-month period. Search request statements were parsed into separate terms or phrases. Using print sources from the National Library of Medicine, Each parsed patron term was assigned corresponding MeSH terms. Each patron term was entered into each of the selected interfaces to determine how effectively they mapped to MeSH. Data were collected for mapping success, accessibility of MeSH term within mapped list, and total number of MeSH choices within each list.Results: The selected MEDLINE interfaces do not map the same patron term in the same way, nor do they consistently lead to what is considered the appropriate MeSH term.Conclusions: If searchers utilize the MEDLINE database to its fullest potential by mapping to MeSH, the results of the mapping will vary between interfaces. This variance may ultimately impact the search results. These differences should be considered when choosing a MEDLINE interface and when instructing end users. 相似文献
19.
利用遗传算法确定医学文献的研究热点 总被引：3，自引：0，他引：3
提取医学文献的主题词特征向量,检索文献在发表两年后的最新被引次数,以此作为热点文献的指标,利用遗传算法编程,优化提取出能表达热点文献内容的主题词组合。以肿瘤干细胞为测试对象,以词频分析所得的结果作为基准线,并请相关领域专家对两组结果进行评价比较,结果显示遗传算法所得到的结果优于词频分析。 相似文献
20.
分析MeSH在PubMed、中国生物医学文献数据库、中国医院知识资源总库和万方医学网中的应用,总结出MeSH在医学信息检索中的三种应用机制,即直接使用主题词检索、实现自然语言或分类号向主题词的转换以及利用主题词等级范畴表进行知识导航,进而提出加强中文主题词表和中文一体化医学语言系统的构建与研究的建议。 相似文献