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OBJECTIVES: HealthCyberMap (HCM-http://healthcybermap.semanticweb.org) is a web-based service for healthcare professionals and librarians, patients and the public in general that aims at mapping parts of the health information resources in cyberspace in novel ways to improve their retrieval and navigation. METHODS AND SERVICE DESCRIPTION: HCM adopts a clinical metadata framework built upon a clinical coding ontology for the semantic indexing, classification and browsing of Internet health information resources. A resource metadata base holds information about selected resources. HCM then uses GIS (Geographic Information Systems) spatialization methods to generate interactive navigational cybermaps from the metadata base. These visual cybermaps are based on familiar medical metaphors. CONCLUSIONS: HCM cybermaps can be considered as semantically spatialized, ontology-based browsing views of the underlying resource metadata base. Using a clinical coding scheme as a metric for spatialization ('semantic distance') is unique to HCM and is very much suited for the semantic categorization and navigation of Internet health information resources. Clinical codes ensure reliable and unambiguous topical indexing of these resources. HCM also introduces a useful form of cyberspatial analysis for the detection of topical coverage gaps in the resource metadata base using choropleth (shaded) maps of human body systems.  相似文献   

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A thesaurus has been developed to serve as the integrating unit for the computerized information storage and retrieval system of the Vision Information Center. The Center maintains records of information in the visual sciences which are available to the user in the forms of computer-assisted instruction, literature retrieval, and patient records. The numerical coding system used in the thesaurus permits seven levels of specificity; this specificity is required for depth of indexing, as well as to limit the retrieval to those bibliographic citations which are relevant to a highly specific search request. The flexible design of the thesaurus facilitates frequent revision and addition of new terminology.  相似文献   

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基于DC的医学信息资源元数据比较分析   总被引:4,自引:0,他引:4  
分析比较3种医学信息资源 metadata(MCM、CISMeF、EBM metadata)的格式、结构、编码语言等,探讨医学信息资源metadata应用开发等问题。  相似文献   

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对多语言信息进行语义层面的精确描述,为用户提供准确的跨语言信息资源,是当前多语言信息服务中必须面临和解决的实际问题。多语言主题词表正是解决这一问题的有效工具资源之一。文章首先介绍了国外三个常用多语言主题词表,然后对多语言主题词表在多语言信息自动标引和多语言信息检索两个领域中的应用情况进行了分析,说明多语言主题词表在多语言信息服务领域的潜在应用价值。  相似文献   

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BACKGROUND: EUROETHICS is a database covering European literature on ethics in medicine. It is produced within Eurethnet, a European information network on ethics in medicine and biotechnology. OBJECTIVES: The aim of Euroethics is to disseminate information on European bioethical literature that may otherwise be difficult to find. METHODS: A collaboration model for pooling data from different centres was developed. The policy was to accomplish data uniformity, while still allowing for local differences in terms of software, indexing practices and resources. Records contributed to the database follow common standards in terms of data fields and indexing terms. The indexing terms derive from two thesauri, Thesaurus Ethics in the Life Sciences (TELS) and Medical Subject Headings (MeSH). Combining elements from search tools developed previously, the developers sought to find a technical solution optimized for this data model. An approach relying on a thesaurus database that is loaded along with the bibliographic database is described. RESULTS AND CONCLUSIONS: The present case study offers examples of possible approaches to several tasks often encountered in database development, such as: merging data from diverse sources, getting the most out of indexing terms used in a database, and handling more than one thesaurus in the same system.  相似文献   

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叙词表的术语服务方式研究   总被引:1,自引:0,他引:1  
常春 《图书情报工作》2012,56(22):12-15
通过概念的形成过程、概念的表达形式,论述基于概念的术语服务形式;同时,基于叙词表的等级关系与相关关系,论述如何通过概念关系组织相关术语,实现基于叙词表概念关系的术语服务方式;最后,讨论术语服务的知识产权、更新维护及映射集成问题。  相似文献   

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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   

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研究了对资源整合的方法,设计与实现了一种基于元数据仓储与动态链接的资源整合系统。采用OpenURL技术解决了网络数据库之间相互链接的问题。采用元数据仓储,通过元数据收集、整理、聚合、存储,建立了各种分类体系,构建了资源导航、高级检索、个性化服务、用户权限管理等功能,使用户能够在统一的界面上,实现对图书馆资源的统一检索、浏览和利用。  相似文献   

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基于概念空间方法的信息检索技术研究   总被引:14,自引:0,他引:14  
为了解决词汇差异问题,词表构造在信息检索系统中有着重要意义。概念空间方法是利用计算机自动构造概念语义网络(词表)并以此为基础进行概念检索的一种方法。由词语作为语义网络的节点,词语之间的关联权重以一个给定文档集合中词语的共现率来计算,其大小代表它们之间的相似性。检索时系统采用人工智能方法激活与检索入口词相关的术语或概念,为用户提供交互式的检索用语建议。方法的具体步骤包括文档和对象列表收集、对象过滤和自动标引、共现分析和联想检索四个阶段。这种方法多用于英文检索系统,但对我国的信息检索系统也有重要的借鉴意义。  相似文献   

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情报检索系统与后控制词表   总被引:3,自引:0,他引:3  
回顾七十年代以来, 我国情报工作现代化的历史, 不难看出, 主题词典所起的重大作用。它不仅提供了计算机情报检索所需的检索语言, 并促进了我国情报工作现代化的进程。但十多年的实践, 也发现了它的许多不足: 维护的难度大和工作量大, 标引的不一致性、检索效率不理想等。在计算机的各种资源已大大丰富、要求用户友好的情况下, 作者认为主要词典应退居幕后, 采用全文检索加后控制的词表当是明智之举。  相似文献   

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分面分类在网络资源组织中的应用   总被引:15,自引:1,他引:14  
针对网络信息资源的特点,构想在网络信息资源组织中使用分面分类的几种方式,包括在编制分类搜索引擎的分类表时使用复分表、仿分,在信息标引中使用分面叙词表,在综合性分类搜索引擎的检索界面上部分使用分面分类思想,在专业性搜索引擎检索界面上完全使用分面分类表进行可视化检索等。  相似文献   

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描述医学资源的元数据方案   总被引:3,自引:0,他引:3  
介绍4种描述医学资源的元数据:OhioLINK的医学元数据、NLM Metadata Schema、Medi-cal Core Metadata(MCM)、CISMeF(Catalog and Index of French-language health resources)无数据,得出一般是通过元数据的复用来形成描述医学资源的元数据集的结论。  相似文献   

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介绍五种医学资源元数据方案:OhioLINK医学元数据、NLM Metadata Schema、 Medical Core Metadata(MCM)、CISMeF元数据、EBM metadata,分析比较他们的共性与区别,为制定我国的医学元数据方案提供思路。  相似文献   

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受控标引和受控词表的应用   总被引:1,自引:0,他引:1  
本文介绍了受控标引的定义、特点,并对当前关于受控标引和受控语言已经过时的论点进行了反驳,认为受控标引和受控语言具有自然语言所不能代替的优点。文章还论述了受控词表在数据库、搜索引擎、DC元数据中的应用,进一步证明受控语言在当前网络环境下具有一定的地位,认为当前文献信息的组织和利用应该把受控语言和自然语言结合起来。  相似文献   

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统计分析法自动标引的改进研究   总被引:2,自引:0,他引:2  
统计分析法自动标引是自动标引的一种重要方法。本文从标引词应反映文献主题内容这一原则出发,对统计分析法自动标引从标引源的确定、权值的设计、词频的调整及检索后控词表的设计与维护等方面提出了一些改进设想。通过这些方法使标引词更好地反映文献主题的同时提高检索效率。  相似文献   

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网络学科信息资源组织的相关标准与规范   总被引:4,自引:0,他引:4  
标准化和规范化建设是网络学科信息资源组织的基本保证。本文主要介绍了CALLS重点学科导航系统的相关标准与规范,包括:资源类型的确立、资源选择标准、资源描述标准以及网络学科导航系统的评估标准等方面内容。  相似文献   

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元数据与文献编目的异同   总被引:9,自引:1,他引:8  
元数据与文献编目均是组织信息资源的方式,比较其异同,有利于用户对网上信息资源的存取与检索,有助于书目工作者参与网络信息的组织与控制.  相似文献   

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