共查询到20条相似文献，搜索用时 171 毫秒
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信息整合与数据挖掘技术在文献数据库创新性建设领域具有非常重要的意义,这已在国外同行的应用中取得了较好的效果,但国内对此项技术的研究和应用才刚刚起步。该研究通过广泛调研,制定了文献专题知识数据库的期刊和文献收录标准,以及数据库框架结构和数据录入标准。在此基础上,收集了国内外乙肝相关文献,借助期刊和文献影响力及专家内容分析等筛选方法筛选了近1.5万篇左右文献信息,构建了一个知识覆盖面广、文章质量高和分类标引好的乙肝专题文献知识库,并进一步通过构建文本挖掘工具字典,成功实现了乙肝专题文献知识库与国内外科学数据型数据库的关联与整合,从而初步实现了乙肝病毒相关蛋白质的知识挖掘。 相似文献
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信息整合与数据挖掘技术在文献数据库创新性建设领域具有非常重要的意义,这已在国外同行的应用中取得了较好的效果,但国内对此项技术的研究和应用才刚刚起步。该研究通过广泛调研,制定了文献专题知识数据库的期刊和文献收录标准,以及数据库框架结构和数据录入标准。在此基础上,收集了国内外乙肝相关文献,借助期刊和文献影响力及专家内容分析等筛选方法筛选了近1．5万篇左右文献信息,构建了一个知识覆盖面广、文章质量高和分类标引好的乙肝专题文献知识库,并进一步通过构建文本挖掘工具字典,成功实现了乙肝专题文献知识库与国内外科学数据型数据库的关联与整合,从而初步实现了乙肝病毒相关蛋白质的知识 相似文献
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研究利用数据挖掘中的关联规则挖掘分析及论文数据库，进行相关文献推荐，提出适用于进行相关文献推荐的改进的混合加权关联规则挖掘算法，并通过用户行为分析确定相关文献集和垂直权重，采用Google搜索引擎的PageRank算法确定水平权重，获得一些有意义的分析结果。 相似文献
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“十一五”期间我国文献情报领域知识发现研究综述 总被引：1，自引：0，他引：1
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文章以从CSSCI下载的有关“数据挖掘在图书馆中的应用”的题录信息为研究对象,使用CiteSpace从机构、作者、共被引文献、关键词等角度分别绘制了相关聚类视图和共被引网络视图,以可视化图谱的形式来展示国内图书馆数据挖掘的知识谱系,分析机构群特征、作者群特征、知识基础、研究热点和趋势,以期对该领域研究达到全面、整体的认识与把握。 相似文献
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介绍了中医药临床文献常用的数据挖掘技术及其在中医药临床文献分析中的应用,指出采用中医专家和数据挖掘专家密切协作挖掘中医药数据,不仅可以从理论和临床上解决中医药的难点,还可能是未来挖掘和利用中医药知识的重要方法。 相似文献
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网络数据挖掘及其在面向Web的知识检索中的应用 总被引：6，自引：1，他引：5
介绍了网络数据挖掘的含义和相关技术，并着重介绍了网络数据挖掘方法在面向Web的知识检索中的应用：通过对信息源内容与结构的挖掘，对用户访问记录的挖掘，对专家访问的挖掘，发现隐藏在网络数据流背后的知识关联和知识，形成特定知识库，支持知识检索。 相似文献
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[目的/意义]传统数据挖掘技术很难有效地对海量、高维、动态的网络数据进行分析,这成为当前商业智能、决策分析和知识发现等领域中的主要技术瓶颈,网络动态数据挖掘能有效解决这一问题。[方法/过程]通过梳理网络动态数据挖掘相关理论与应用研究成果,对网络动态数据挖掘研究的形成过程、发展历程和研究趋势进行归纳和总结。[结果/结论]研究认为:网络动态数据挖掘过程中突变性问题、与情报学的融合问题、社交网络动态演化模型、研究合作网络时序变化及网络动态数据挖掘中的粒度计算问题等是情报学研究需要关注的主要研究方向。 相似文献
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数据挖掘技术在科技期刊网站中的应用 总被引：1，自引：0，他引：1
基于数据挖掘技术,对科技期刊网站系统中产生的数据进行分析,获取隐藏其中有价值的知识.根据科技期刊的行业特点,以及其信息系统的应用情况,通过整合所得到的相关数据,利用数据挖掘技术,对整合后的数据进行分析,从而在科技期刊经营模式中获取到大量有价值的规律和宝贵的经验. 相似文献
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GO在生物数据整合中的应用 总被引：1，自引：0，他引：1
GO是基因本体联盟开发的一个合作项目,建立了生物过程、分子功能和细胞组分三个领域的本体。在生物学中,GO已应用于基因功能注释、异构生物序列数据库整合、辅助生物学文献主题检索等各个方面。GO的应用为不同类型数据的知识组织体系整合提供了思路与方法,将有助于生物学研究中两种重要的信息资源——医学文献与科学数据的整合,为科学研究和情报研究提供更广阔的参考信息。 相似文献
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《The Journal of Academic Librarianship》2022,48(4):102534
PurposeThis study analyze academic library services during Covid-19 pandemic (2020 and 2021), as well as the challenges they face, emerging library roles, and the most effective communication tools.MethodA systematic review of the relevant literature was undertaken following PRISMA guidelines. The relevant literature was retrieved from four major scholarly databases (Scopus, Web of Science, Library, Information Science & Technology Abstracts (LISTA), and Library and Information Science Abstracts (LISA)). The relevant 23 studies were included fulfilling inclusion criteria. A quality assessment of the included studies was also performed.FindingsThe findings revealed that Covid-19 pandemic is certainly effecting and transforming libraries, their services and management. The library services during Covid-19 pandemic, their fundamental challenges, emerging roles, and available preferable communications tools are the categories in this study to better understand the pandemic-transformation.ImplicationsThe practical and policy implications are that libraries must establish infrastructure and improve accessibility in order to provide the best possible support to modern library users who access resources remotely in this rapidly evolving digital environment. Organizational policymakers and library directors should prepare emergency and disaster management plans. The libraries should ensure their presence on social media and make use of their library websites. 相似文献
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James T. Mellone 《Behavioral & Social Sciences Librarian》2013,32(2):133-157
This study provides a database evaluation method for the practicing bibliographer that is more than a brief review yet less than a controlled experiment. The author establishes evaluation criteria in the context of the bibliographic instruction provided to meet the research requirements of undergraduate sociology majors at Queens College, City University of New York. Applying the criteria to critically analyze SocINDEX and Sociological Abstracts finds that Sociological Abstracts better meets the needs of sociology undergraduates and concludes that Sociological Abstracts is the more inherently reliable and authoritative bibliographic resource for the indexing, abstracting, and researching of scholarly sociological literature. 相似文献
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《Research Strategies》1998,16(2):103-115
The content of library instruction sessions associated with college biology is examined. A review of the literature is supplemented by a survey of instruction librarians at Ohio institutions offering biology majors. The literature and survey responses indicate that a typical instruction session occurs once during an academic term, highlights automated access to the library catalog and Biological Abstracts, discusses the difference between journals and magazines, and does not test the students or offer an opportunity for evaluation of the instruction session. More of the library instruction sessions described in the literature were associated with introductory biology courses than in the survey responses. 相似文献
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新世纪图书情报界图像检索研究总况探析——LISA数据库收录文献计量分析 总被引：6，自引：2，他引：4
以《剑桥科学文摘》(CSA)中的LISA(Library and Information Science Abstracts,《图书馆学和情报学文摘》)数据库为文献源,运用文献计量学方法并结合文献内容,从文献量、语种、著者、期刊和主题等方面对图书情报学2000-2004年图像检索领域研究论文进行分析,并指出存在的不足。 相似文献
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Ina Fourie 《Health information and libraries journal》2009,26(3):171-186
Objective: A review, focusing on emotion, was conducted of reported studies on the information behaviour of healthcare professionals (2004–2008). Findings were intended to offer guidelines on information services and information literacy training, to note gaps in research and to raise research interest. Method: Databases were searched for literature published from January 2004 to December 2008 and indexed on eric , Library and Information Science Abstracts, medline , Psyc INFO, Social Services Abstracts, Sociological Abstracts, Health Source: Nursing/Academic Edition; Library, Information Science & Technology Abstracts; Psychology and Behavioral Sciences Collection; Social Work Abstracts; Soc INDEX with Full Text; SPORTDiscus ; cinhal ; and the ISI Web of Knowledge databases. Key journals were manually scanned and citations followed. Literature was included if reporting on issues concerning emotion. Results: Emotion in information behaviour in healthcare contexts is scantily addressed. This review, however, offers some insight into the difficulty in identifying and expressing information needs; sense making and the need to fill knowledge gaps; uncertainty; personality and coping skills; motivation to seeking information; emotional experiences during information seeking; self‐confidence and attitude; emotional factors in the selection of information channels; and seeking information for psychological or emotional reasons. Conclusion: Suggestions following findings, address information literacy programs, information services and research gaps. 相似文献
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在大数据环境下,科技文献等各类数据爆炸式增长,却难以提供快捷和有效的科技文献服务,究其原因,主要在于科技文献资源组织没有考虑科技文献用户阅读行为。分析国内外用户阅读行为,不仅要对科技文献用户阅读行为进行分析,更重要的是对科技文献阅读用户行为知识进行组织和分析,才能为科技文献服务提供支撑。文章以提高科技文献知识服务的效率为目标,以科技文献用户阅读行为为研究对象,从知识组织角度分析科技文献用户阅读行为知识,借助大数据分析方法,对用户阅读行为知识组织的准备、获取、关联分析以及服务等组织过程,总体架构科技文献阅读行为知识组织模型,并把用户阅读行为分析融入到科技文献的知识组织和服务过程中,将用户阅读行为信息升华为用户知识需求,最终指导知识提供部门为用户提供有效的科技文献知识服务。 相似文献
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《Journal of Interlibrary Loan, Document Delivery & Electronic Reserve》2013,23(4):119-130
ABSTRACT Formed in the former USSR, the system of scientific and technical information on agriculture and adjacent branches ceased to fulfil the tasks that had been set to it. Belarus Agricultural Library (BelAL) started the realization of the project of the existing system reformation. As a result of BelAL efforts nearly 80% of agricultural libraries are automated; Belarusian users got access to the international AGRIS, AGRICOLA, AGROS, CAB Abstracts, CARIS, FAOSTAT and other databases. BelAL users got the opportunity to order any document from any country of the world by international interlibrary loan within the frames of AGLINET. Belarusian information was included into international information systems AGRIS, AGRICOLA, AGROS, CABI and others. BelAL electronic catalogue and reference information presenting data on agricultural management, science, education and non-governmental organizations became accessible via the Internet. In spite of economic crisis, the process of reformation of the scientific and technical system of Belarusian agriculture still continues. 相似文献