共查询到20条相似文献，搜索用时 218 毫秒
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只要是涉及资源集合搜索,现代检索系统一般都忽略了资源集合元数据的问题。而要揭示资源集合层次的信息,一种可选的方法是通过获得资源集合级和文献单元级的元数据,从而深刻理解它们之间的关系。介绍一个对资源集合与文献单元元数据关系提供分类逻辑框架的开发项目。这个逻辑构架支持：元数据规范的开发者定义元数据元素;元数据创建者描述对象;系统设计者实现应用系统的开发,该系统能够充分利用资源集合级元数据所带来的好处。介绍资源集合与文献单元元数据之间存在的三类关系实例：“属性/值传递”、“值传递”和“值约束”,表明即便是对于这些简单的例子,一个精确的公式除了要符合一阶谓词逻辑之外,还需要引入模态概念。这些公式也属于近期信息检索和本体评价方面的研究成果。 相似文献
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Tamar Ganor 《Journal of Map & Geography Libraries》2017,13(2):175-197
A traditional library catalog does not do justice to maps and aerial photographs. Text can never fully describe them and maps' and aerial photographs' geographic coverage or perimeters cannot be displayed visually in the online public access catalog (OPAC), so searching based on their textual metadata without specific spatial reference data used also for display purposes is often not enough to locate relevant items. The Hebrew University of Jerusalem's (HUJI) Geography Department has developed a spatial search engine for their scanned aerial photographs collection that allows users to locate one or more aerial photographs according to the area of the Earth's surface that was photographed and their accompanying metadata. The Humanities and Social Sciences Library, which holds a large unscanned print map collection, has asked to integrate a similar map search mechanism in the Department's existing search engine, and a new website was launched in December 2015 (http://ccg.huji.ac.il/aerialphotos/) showing the aerial photographs' center points alongside the maps' rectangle perimeter. The search engine retrieves maps and aerial photographs that intersect with a user-drawn rectangle. This article discusses the characteristics of these collections, the rationale behind searching for maps and aerial photographs together, and the process of defining and building this spatial search engine. This method allows users to view which items are available in their area of interest side-by-side, on a Google Maps background map. 相似文献
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In 2011, the University of North Texas (UNT) Libraries partnered with researchers in the university's academic departments to describe and provide access to items not traditionally included in the UNT Libraries’ systems. Including more than 1,400 items apiece, the two projects are considered active datasets by their respective users. Each collection provided new challenges in harmonizing partner, metadata, and end-user requirements. This article discusses the projects, workflow for defining requirements, and final implementation in the UNT Digital Library. These collections serve as a model for integrating other research projects easily and inexpensively into a repository infrastructure. 相似文献
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Maura Valentino 《Journal of Web Librarianship》2017,11(3-4):231-240
ABSTRACTThe historical clothing collections held by academic and other institutions serve as an important resource for scholars in fields ranging from fashion design to sociology. While metadata schemes have been created for individual clothing collections, no standard metadata scheme for clothing had been developed. This case study describes the creation of a linked data metadata scheme for clothing designed for the Oregon State University's College of Business Design Programs' Historical and Cultural Textile and Apparel Collection housed within the ScholarsArchive digital repository. In addition, the scheme can be used as a standard clothing metadata scheme which may be implemented by other organizations, or extended as needed. 相似文献
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博物馆藏品档案是博物馆藏品的重要组成部分,对藏品档案的开发利用已经引起了社会的关注。研究藏品档案用户需求行为有利于展现藏品档案独特的历史记忆,发挥博物馆文化服务平台的作用。以用户需求行为角度出发,采用定量分析的方法,对藏品档案用户需求行为进行研究分析,通过数据分析发现现如今博物馆藏品档案服务与时代发展脱钩,不能满足用户日益增长的多元需求,并从深化服务理念、建设数字化管理、加强先进技术使用三方面给出服务改进建议。 相似文献
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ABSTRACTThe University of South Florida Libraries house and provide access to a collection of cultural heritage and 3D digital models. In an effort to provide greater access to these collections, a linked data project has been implemented. A metadata schema for the 3D cultural heritage objects which uses linked data is an excellent way to share these collections with other repositories, thus gaining global exposure and access to these valuable resources. This article will share the process of building the 3D cultural heritage metadata model as well as an assessment of the model and recommendations for future linked data projects. 相似文献
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面向网络信息资源聚合搜索的细粒度聚合单元元数据研究 总被引：1，自引：0，他引：1
由于相关信息片段分散分布在海量且复杂多样的网络信息资源中,用户往往需要花费大量时间浏览、查询和收集所需信息。面向聚合搜索的细粒度聚合单元元数据可以深入揭示信息特征及其关联关系,促进知识发现并提升知识服务效率。因此,有必要构建细粒度聚合单元的元数据描述框架。本文以图书情报领域开放获取期刊论文、在线百科、博客等网络信息资源为数据源,采用逻辑结构分析和形式结构分析方法建立聚合单元划分框架,包括篇章层级的标题、著者等外部特征,以及节段、句群、图表单元中的话语意图和语义功能等特征;通过分析聚合单元的属性特征及复用DC、LOM元数据元素,构建描述聚合单元访问信息、物理信息和语义信息的元数据框架;设计检索数据库并采用实验法对聚合单元元数据框架进行验证。实验表明,该元数据框架可支持多类型网络信息资源、各层级细粒度聚合单元的检索,可为细粒度信息聚合与搜索提供理论基础与实践指导。图7。表6。参考文献58。 相似文献
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Hyelim Lee 《亚洲交流杂志》2018,28(3):227-246
In this study, we track the severity of partisan polarization in the following of legislators on Twitter during the initial two years of Twitter's introduction to South Korea. We examine the pattern of co-following among Twitter users following members of the 18th Korean National Assembly at three time points. We collected a complete list of all followers for each legislator and constructed their co-following network. We also supplemented our following data with survey data. This allowed us to match the same Twitter user's following behavior with their individual level attributes. Our aggregate level analysis showed that the severity of polarization in Twitter following of National Assembly members lessened from Time 1 to Time 3. We also discovered that, even when tracking only the ‘original’ followers, cross-party following has increased over time. The survey-based results reaffirm our conclusion based on the aggregate data. 相似文献
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《Library & information science research》2005,27(2):190-202
To help users find their way around the large number of titles available, public libraries organize the collection by placing titles on shelves by genre, by adding classification codes in their online catalogs, and by pictograms on book covers. However, users may have different perceptions of how titles are to be grouped in genres or categories. Public library collections will be more accessible when the way their collection is organized matches these users' perceptions. The authors show how user perceptions can be derived from library loan transaction data. To overcome the particular methodological issues in using such data, a method of ultrametric trees and latent class analysis is developed to determine segments of users and how they categorize the collection. Results show clear user categorizations that in particular respects differ from conventional public library categorizations. 相似文献
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When a scholarly monograph is made available in both print and electronic formats, which format will users prefer? This study analyzed monograph usage data from three university presses in the University of Toronto Libraries' collections, comparing print and ebook usage patterns of identical titles. The goal was to examine format preferences and determine whether there are differences in usage across subject disciplines or publishers. The study showed that although in many cases users preferred one format over another, they used books in both formats. If a subject was popular, usage tended to be high for both formats, and if unpopular, low for both formats. The data also indicated that there were some noticeable differences in ebook usage for particular subjects, and the authors concluded that format does matter and therefore it is desirable for libraries to provide both formats if possible. The study also highlighted how critical metadata are in promoting the use of electronic resources. If there were no ebook metadata within the library catalog, the ebook usage was low. This analysis adds to a growing body of literature in user preferences on book formats that can assist libraries in making better-informed decisions in collection building. 相似文献
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Value-based metadata quality assessment 总被引：1，自引：0，他引：1
This article proposes a method that allows a value-based assessment of metadata quality and construction of a baseline quality model. The method is illustrated on a large-scale, aggregated collection of simple Dublin core metadata records. An analysis of the collection suggests that metadata providers and end users may have different value structures for the same metadata. To promote better use of the metadata collection, value models for metadata in the collection should be made transparent to end users and end users should be allowed to participate in content creation and quality control processes. 相似文献
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Martin R. Kalfatovic Effie Kapsalis Katherine P. Spiess Anne Van Camp Michael Edson 《Archival Science》2008,8(4):267-277
The Flickr Commons was created as a forum for institutions to share their rich photographic collections with the emerging
Web 2.0 audience of Flickr; the Smithsonian Institution was the fourth member of the Commons. The Smithsonian effort was a
direct collaborative effort of the libraries, archives, museums, and information technology staff that generated new pathways
for collaboration between these units. As the world’s largest museum complex, these Smithsonian units serve as a microcosm
for collaboration in the information age. The Flickr Commons project provided insights into how the knowledge, skills, and
abilities of libraries, archives, and museums (LAM) can converge in the Web 2.0 environment to provide collection access to
new, and in some cases unknown, audiences. Simultaneously, by putting “LAM” content into an environment that allows for direct
interaction by these audiences, the knowledge of the content for holding institutions is enriched. By exposing Smithsonian
content within the Flickr environment, the Institution is learning what content is desired by the Web 2.0 world, how to bring
crowd-sourcing into professionally curated collections, and how to bring diverse institutional skills together in a collaborative
project. 相似文献
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标签形式的社会性语义越来越占据主导地位,使元数据界在这种新形式的信息内容表达和检索方面面临机遇和挑战。其中,主要的挑战是与标签相关的语境信息的缺失。以Flickr标签为例,对如何利用社会性语义资源来丰富主题元数据进行了实验。实验过程包含4个步骤：收集Flickr标签样本;通过共有信息计算标签间的同现情况;通过Google检索结果来追踪标签对的语境信息;用自然语言处理和机器学习技术来抽取标签间的语义关系。本实验能够利用Google搜索结果构建语境库,并且以自然语言处理和机器学习算法对这些语句进行处理。这种新方法对于赋予标签对以一定语义关系有相当高的准确率。也探讨该方法在利用社会性语义丰富的主题元数据方面的意义。 相似文献
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《Slavic & East European Information Resources》2013,14(2-3):109-126
SUMMARY With support from a National Endowment for the Humanities Reference Materials Program grant for 2006–2008, faculty and librarians at the University of Washington (UW) are collaborating with William Brumfield (Tulane University) to preserve and catalog the latter's unmatched collection of Russian architectural photographs, create metadata describing the photographs, and make images and text widely accessible as part of an innovative web-based educational and research resource. Building on experience gained through the creation of an experimental pilot database, project staff are adapting emerging standards (METS and CCO) to a custom design that presents images from the Brumfield Collection within their architectural, geographic, and chronological contexts, both as interrelated views of individual structures, and as buildings that share certain structural and stylistic features with other buildings within and beyond the Russian cultural continuum. 相似文献
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《图书馆管理杂志》2013,53(2-3):139-160
Abstract Mounting digital images of art objects on a Web site is only the first step in providing patron access to such materials. Libraries and museums have a responsibility to provide not only high-quality digital reproductions but also high-quality access from an integrated library catalog with controlled vocabulary and consistent access points. While some digital collections may have excellent internal searchability and require no more than collection level cataloging in a library's OPAC, others may demand cataloging of individual components of the collection. A particular collection's significance, its potential audience, the types of access required, as well as factors such as its size and cohesiveness need to be considered before becoming locked into a specific Web designespecially when it is that of another institution. This paper examines several online library catalogs in which records for art objects as well as historical objects and natural history specimens have been merged, with varying degrees of success, and briefly addresses a modest proposal to catalog ceramic objects at the Ohio State University Libraries. The importance of consistent subject access in a merged catalog, regardless of the thesaurus or thesauri used, is stressed. Library consortia and bibliographic utilities may offer an economically appealing alternative for libraries that cannot design and construct their own digital libraries but these external organizations often have limited capability for-or interest in-modifying the design for a particular library and even less interest in cataloging the collections. Libraries, too, must be faulted for simply listing available electronic resources, either alphabetically or in broad subject categories, on a separate portion of their Web page and failing to provide full catalog records in their catalog. Finally, it is emphasized that the current debate over the viability of MARC 21 versus other metadata standards remains largely irrelevant to the importance of continuing to cultivate a monolithic online catalog, maintaining cataloging standards, and not mindlessly developing what amounts to a separate, rudimentary catalog solely for electronic resources. 相似文献