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1.
Medical Subject Headings and medical terminology: an analysis of terminology used in hospital charts
Terminology used by health professionals in everyday written discourse was compared with terminology in a standardized medical vocabulary, the Medical Subject Headings (MeSH). Fifty written hospital charts were selected at random and analyzed by a computer program that identified MeSH terms in the charts. The charts were analyzed against two related MeSH vocabularies--one containing MeSH terms and one containing both MeSH terms and backwards cross-reference terms. When small words such as articles and prepositions were disregarded, approximately 50% of the words in a medical chart were found to be MeSH-related terminology. In addition, about 40% of MeSH-related words in the charts were either MeSH terms or backwards cross-reference terms. 相似文献
2.
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
3.
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
4.
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
5.
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
6.
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
7.
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
8.
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
9.
在现有国内外医学检索语言研究的基础上,构建了一个跨语种一体化医学检索语言系统.通过中、英文医学词汇、中图法等级结构和MeSH树状结构及其相互之间的对应转换,该系统为医学信息检索提供更深层的医学知识导航及其跨语言检索接口. 相似文献
10.
Searching for patterns in the MeSH vocabulary 总被引：1，自引：0，他引：1
NLM revises its MeSH vocabulary annually to reflect changes in biomedical literature and the health sciences community. This study tested two hypotheses about NLM's MeSH vocabulary. The first is that new terms are added to MeSH when their broader terms have an increased number of postings. One examination compared the number of postings for the broader terms of new and existing terms in the current MEDLINE file; the other compared them over time. No significant statistical difference was found in either case. A second hypothesis--that there is a relationship between the patterns of MEDLINE indexing and searching and the organization of the MeSH tree structure--was tested by comparing the distribution of searched terms in the MeSH trees with the distribution of all terms. It was found that certain trees are searched more often than could be predicted by the overall term distribution, while others are searched less frequently than expected. In summary, (1) new terms cannot be predicted by the increase in postings of existing terms, and (2) searchers' and indexers' use of the terms' tree structure does not correlate with the terms' distribution in the MeSH trees. 相似文献
11.
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
12.
E V Muench 《Bulletin of the Medical Library Association》1971,59(3):404-419
A computerized English/Spanish correlation index to five biomedical library classification schemes and a computerized English/Spanish, Spanish/English listings of MeSH are described. The index was accomplished by supplying appropriate classification numbers of five classification schemes (National Library of Medicine; Library of Congress; Dewey Decimal; Cunningham; Boston Medical) to MeSH and a Spanish translation of MeSH The data were keypunched, merged on magnetic tape, and sorted in a computer alphabetically by English and Spanish subject headings and sequentially by classification number.SOME BENEFITS AND USES OF THE INDEX ARE: a complete index to classification schemes based on MeSH terms; a tool for conversion of classification numbers when reclassifying collections; a Spanish index and a crude Spanish translation of five classification schemes; a data base for future applications, e.g., automatic classification. Other classification schemes, such as the UDC, and translations of MeSH into other languages can be added. 相似文献
13.
Bronson RJ 《Medical reference services quarterly》1994,13(1):73-80
Locating notes about MeSH subheadings can be one of the most difficult aspects of MEDLINE searching. When used with Medical Subject Headings (MeSH), subheadings serve to limit or define the focus of a heading. National Library of Medicine (NLM) indexers, staff members who enter the MeSH indexing into the database, use subheadings freely. They do follow indexing conventions and savy searchers need to be aware of how to obtain basic subheading information to assist in search formulation. There are a number of methods which may be used in order to view subheading use notes. This column will provide an overview of some alternatives to locating such information. 相似文献
14.
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
15.
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
16.
[目的/意义] 对阿尔茨海默病（AD）进行基因-疾病关联挖掘，以捕捉潜力研究方向。[方法/过程] 基于LBD理论构建开放式知识发现架构，结合MeSH词表、DisGeNET等医学术语、组学数据对PubMed中AD文献进行知识挖掘，采用关联规则与算法排序等方法对部分基因重合的强关联主题共现疾病和优先候选基因进行筛选，结合时间切片和其他LBD工具对比加以验证。[结果/结论] 对88 334篇AD文献进行基因-疾病识别，并与2 120种AD基因进行匹配；以XYZ分析视角对识别出的992种主题共现疾病及11 899种候选基因进行关联排序；精炼10种强关联疾病与25种优选候选基因，结合文献报道加以论述。通过LBD挖掘目标疾病-共现疾病-基因之间潜在关联，可快速捕捉潜力研究方向，缩小基因测序范围，为新研究假设的生成提供重要指导依据。 相似文献
17.
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
18.
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
19.
R W Wender E L Fruehauf M S Vent G D Wilson 《Bulletin of the Medical Library Association》1977,65(3):330-337
Continuing medical education is an area of current concern to health sciences librarians. A comprehensive study of literature searches requested by physicians and by fourth-year medical students serving their five-week preceptorship with a rural physician was conducted: (1) to determine if there is any pattern to the requests received so that areas of study for continuing medical education can be ascertained; and (2) to determine whether there is any appreciable difference in nature and complexity between those searches requested by clinicians and those requested by medical student preceptees. Literature search requests were examined in terms of individual MeSH subjects, subcategories, and categories for each subject covered in every search. This analysis has demonstrated that assessing the clinical problems of practicing physicians may be one method of determining needed continuing medical education topics. 相似文献
20.
R Pachefsky 《Bulletin of the Medical Library Association》1969,57(1):10-20
A survey of present uses and arrangement of medical library card catalogs was made in order to determine current practices and trends. Attention was focused on the influences of MeSH on the card catalog. The results indicate that the prevalent type of card catalog found in medical libraries is the divided catalog. In addition, it appears that this catalog arrangement is gaining acceptance, and the trend is toward division. MeSH has an effect on the organization of the card catalog; libraries indicate that it is an influential factor in the decision to divide the catalog. 相似文献