共查询到20条相似文献，搜索用时 78 毫秒
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本文以平衡记分卡(BSC)为基础,结合我国评估ERP实施绩效的实际情况,提出了适合于评估ERP系统实施水平的ERP记分卡框架,由此构建了层次评估指标模型并给出了基于模糊数学的评估算法,同时讨论了模型的数据处理、指标权重分配等问题,为我国企业实施和评估ERP提供了一个综合评估模型. 相似文献
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从图书馆评估研究论文的数量与主题分布出发,总结了图书馆评估概念的系统与对比定义方法,系统整理了图书馆评估的三种概念模型,即以整体图书馆为评估单位的模型,针对图书馆活动的某一环节或某一种评估模式建立的模型以及描述一般评估过程的PDCA模型;并对图书馆评估的历史进展、评估方法的研究现状进行了综述。 相似文献
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互联网已经成为企业和组织获取竞争对手情报的主要来源之一.建立基于Web的竞争对手情报自动获取系统已成为企业的迫切需求.在竞争对手情报自动获取系统中,商业机构名的识别是基础,它为竞争对手的标识和进一步情报抽取提供了依据.本文提出了一种基于互联网的商业机构名识别新方法.该方法考虑了商业机构名与其上下文之间的语义关联性,通过语义标注和隐马尔可夫模型相结合的方法进行商业机构名识别.我们以互联网上的真实中文网页为数据集对提出的识别算法进行了性能评估,并从召回率、准确率和F指标三个方面与CHMM(基于层叠隐马尔可夫模型的机构名识别算法)、MEM(基于最大熵模型的机构名识别算法)以及SVM(基于支持向量机的机构名识别算法)进行了对比.实验结果表明,本文提出的算法改善了商业机构名识别效果,并且具有很好的普适性. 相似文献
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基于Hadoop开源分布式计算框架和Mahout协同过滤推荐引擎技术构建图书推荐引擎系统,并利用云模型和Pearson系数对传统协同过滤推荐算法进行改进,改善传统单机推荐算法在高维稀疏矩阵上进行运算所导致的系统性能不佳及推荐结果不准确的问题。利用实验对分布式推荐平台的整体性能及改善后的协同过滤推荐算法进行测试评估,发现当虚拟机节点不断增加时,协同过滤推荐引擎的计算时间不断减少,这表明推荐引擎系统的总体性能较传统单机推荐引擎得到提升;利用MAE分别对原始协同过滤推荐效果和改进后的推荐算法进行测评,发现改进后的推荐引擎算法的推荐准确率较改进前提高13.1%。 相似文献
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Internet个性化智能信息检索的分析与研究 总被引：9，自引：0，他引：9
本文首先对Internet网上信息检索进行了综述与分析 ,针对存在的问题 ,介绍了智能Agents的解决方法 ,最后本文提出了一个多Agents系统的个性化智能信息检索系统的模型 ,该模型集成了神经网络、最好优先算法、信息过滤、相关反馈等多种算法 相似文献
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面对海量的科技文献资源,如何评估文献、作者和研究机构的学术质量和可信度引起了广泛关注。在众多可信度评价标准中,权威度是优先和关键的评价指标。因此,对科技文献、作者和机构等学术实体的科技实力和权威度进行研究与量化评估具有很大的现实意义。本文利用文献、作者、机构等三类实体间的引用、合著、合作等关系建立异构网络模型,在此基础上提出了混合随机游走算法 Co-AcademicRank 定量计算文献、作者、机构的权威度,并基于 MapReduce 实现了分布式的 Co-AcademicRank 算法。最后通过对情报学和图书馆学数据集测试与分析,对比分析了 PageRank 和 Co-ranking 算法,验证了本模型的有效性、准确性和优越性。同时,实验比较了算法在单机环境下和 Hadoop 平台下的运行时间,证明了分布式算法的高效性和稳定性。 相似文献
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探索高校专利价值评估模型,快速锁定存在权利转移价值和失效风险的专利,有利于提升高校科技成果管理效率,加快高校科技成果向产业界转移,进一步激发高校科研人员的创新潜力。文章结合已有研究中的专利评估指标,从指标易获取性角度出发,选取11个指标形成专利评估体系;以云计算为技术领域,创建专利分析资源库;进而结合主成分分析与分类算法,构建专利价值评估模型;基于评估模型,对云计算领域中的高校专利进行识别,借鉴标准十分评估方法,对专利的权利转移概率进行划分,明确高校中具有权利转移价值和失效风险的专利。研究表明,结合主成分分析法,确定评估指标的有效性,使用十折交叉验证选取人工神经网络算法构建评估模型,分析发现高校存在权利转移价值的专利呈二次多项式分布,10.68%专利具有较高的权利转移价值,22.64%专利存在失效风险。文章构建的专利价值评估模型能够为高校科技成果管理人员进行专利运营,以及企业探寻高校核心技术提供决策支持。 相似文献
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计算机仿真系统,由不同的成员构成,每一部分系统构成都对整个系统的性能有着重要影响。在当前,对于仿真系统的相关评估我们主要集中在模型自身的正确性上,而忽视了对整个系统的质量进行评价。本文以全面评价仿真系统为首要目标,不但构建了评估模型,还建立起一套相关指标评价体系,并举出相关的应用实例,进行更为具体详实的分析,来评价整个仿真系统的可行性。 相似文献
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《Slavic & East European Information Resources》2013,14(1-2):123-143
ABSTRACT The article examines the most important periodicals of ethnic minorities in Poland. After 1989, many ethnic groups (e.g., Germans and Romanies) were allowed to publish journals and newspapers for the first time since the end of World War II. The publications examined show the rich cultural life of the various ethnic groups as well as their current status in Poland. In addition to popular titles, some scholarly publications are also discussed. 相似文献
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Jon C. Giullian 《Slavic & East European Information Resources》2013,14(3):278-284
The author answers a reference question on bibliographic sources for the Ukrainian periodical press 1840–1850. Helpful publications include bibliographies, guides, and library catalogs. These potentially make mention of revolutionary developments in Hungary (such as the Twelve Points paragraph of the Demands of the Hungarian Nation in March 1848, the subsequent April Laws, and Hungary's declaration of independence in April 1949), and elsewhere in the Hapsburg Empire. 相似文献
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《Slavic & East European Information Resources》2013,14(1):25-74
ABSTRACT The history of the almanac in Croatia is reconstructed through primary research in bibliographic and archival sources. The almanac is a vehicle for knowledge communication in informal contexts, engaging both oral tradition and literary forms traceable to medieval literacy and ways of structuring knowledge. The history of the almanac in Croatia reflects the changing context of the book trade, literacy, and the evolution of language. Four main stages are identified: (1) the beginning of the annual almanac in the seventeenth century; astrological almanacs reflecting the sensibility of the Baroque period; (2) the Enlightenment's stimulation of almanac publishing in the spirit of contemporary secular reforms in agriculture and education; (3) nineteenth-and twentieth-century almanac trade, showing complex and overlapping networks for the production, distribution and appropriation of printed almanacs;(4) roughly the end of World War II, when the almanac slowly moved out of the role of a popular mass medium and into specialized niches represented by regional, diaspora, and religious almanacs. 相似文献
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Neil De Young 《Publishing Research Quarterly》2009,25(3):139-146
Some key questions for publishers in today’s market are: Could Amazon’s recent merger and acquisitions strategy create a disruptive or paradigm shifting business model in the publishing industry? Do their recent actions post mergers and acquisitions illustrate a predicable pattern of behaviour that publishers can strategize around? This paper will explore these questions and look at some of the possible reasons behind Amazon’s business practices and the possible consequences to publishers. 相似文献
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Barbara Lison 《图书馆管理杂志》2013,53(2):180-187
ABSTRACTGerman authorities are expecting more than 1 million refugees by the end of 2015. These people come to Germany to seek protection and assistance and to build a new life, therefore it is important to welcome them and to assist them in their integration as soon as possible. This situation creates a versatile and perfectly fitting opportunity for cultural and educational programs, including libraries, which can play a vital role in this integration process. The key to integration is the knowledge of the German language, and the most important challenge now is to teach the necessary language skills to as many asylum-seekers as possible. 相似文献
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《Journal of Web Librarianship》2013,7(1):41-59
Abstract Many libraries use RSS to syndicate information about their collections to users. A survey of 65 academic libraries revealed their most common use for RSS is to disseminate information about library holdings, such as lists of new acquisitions. Even though typical RSS feeds are ill suited to the task of carrying rich bibliographic metadata, great potential exists for developing applications that can exploit metadata exposed to Web services via RSS. Using the MODS metadata format, entire catalog records can be seamlessly embedded in RSS 2.0 feeds. Existing tools, such as Library of Congress Java toolkits and XSLT stylesheets, can facilitate this process, while a new XSLT stylesheet may be used to create the RSS feeds complete with MODS records. As an example of the added functionality these MODS/RSS feeds can offer, records from a MODS-enriched RSS feed can be ingested into a non-RSS application such as Zotero. As more emerging library technologies use Web services architectures to handle data objects, the ability to syndicate catalog records will become more critical to providing innovative library Web services. 相似文献
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《Legal Reference Services Quarterly》2013,32(3-4):223-229
SUMMARY The Nevada Constitution provides voters with the ability to propose new statutes, amendments to existing statutes, and amendments to the State constitution through the initiative petition process. Voters can also approve or disapprove of existing statutes through the referendum petition process. Both require the circulation of a petition to collect a minimum number of signatures before the Secretary of State will place the measures on the ballot for the general election. As with other topics of law, Nevada has a profound shortage of research resources on initiatives and referenda, but State law and government Web sites provide enough information to allow for significant research. 相似文献
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SUMMARY This article is a case study of Ariel use at the University of Texas at Austin. The author divides the history of Ariel use into three distinct stages: resistance, full implementation, and enhanced. For each stage the advantages and disadvantages of using Ariel are discussed. The author concludes that using Ariel saves both money and staff time and permits faster delivery of documents than other methods. 相似文献
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《Journal of Interlibrary Loan, Document Delivery & Electronic Reserve》2013,23(4):113-119
SUMMARY CISTI, the Canada Institute for Scientific and Technical Information, is one of the world's largest document delivery suppliers, and was among the first to be fully automated. The revolutionary Intel-liDoc system, developed during the years 1993 to 1995, provided for end-to-end automation of the document delivery process, which has enabled CISTI to improve its service and accommodate growth. From the beginning Ariel was, and remains, an integral part of IntelliDoc. This article describes how Ariel has been integrated into IntelliDoc and into CIS-TI's services, showing the benefits to CISTI and to its clients. 相似文献
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Nadia Zavorotna 《Slavic & East European Information Resources》2013,14(1-2):90-96
The author describes the Slavic Humanities Index, a bibliographic database of scholarly and cultural articles on subjects including history; literature; language teaching; linguistics; philosophy; ethnology; performing arts; and cultural, borderland, and regional studies. She discusses its development, its current form and functionality, and plans for the future. 相似文献