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File semantic has proven effective in optimizing large scale distributed file system. As a consequence of the elaborate and
rich I/O interfaces between upper layer applications and file systems, file system can provide useful and insightful information
about semantic. Hence, file semantic mining has become an increasingly important practice in both engineering and research
community. Unfortunately, it is a challenge to exploit file semantic knowledge because a variety of factors could affect this
information exploration process. Even worse, the challenges are exacerbated due to the intricate interdependency between these
factors, and make it difficult to fully exploit the potentially important correlation among various semantic knowledges. This
article proposes a file access correlation miming and evaluation reference (FARMER) model, where file is treated as a multivariate
vector space, and each item within the vector corresponds a separate factor of the given file. The selection of factor depends
on the application, examples of factors are file path, creator and executing program. If one particular factor occurs in both
files, its value is non-zero. It is clear that the extent of inter-file relationships can be measured based on the likeness
of their factor values in the semantic vectors. Benefit from this model, FARMER represents files as structured vectors of
identifiers, and basic vector operations can be leveraged to quantify file correlation between two file vectors. FARMER model
leverages linear regression model to estimate the strength of the relationship between file correlation and a set of influencing
factors so that the “bad knowledge” can be filtered out. To demonstrate the ability of new FARMER model, FARMER is incorporated
into a real large-scale object-based storage system as a case study to dynamically infer file correlations. In addition FARMER-enabled
optimize service for metadata prefetching algorithm and object data layout algorithm is implemented. Experimental results
show that is FARMER-enabled prefetching algorithm is shown to reduce the metadata operations latency by approximately 30%–40%
when compared to a state-of-the-art metadata prefetching algorithm and a commonly used replacement policy. 相似文献
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电子政务互操作技术是实现电子政务信息共享的关键,目前对电子政务互操作技术的研究还主要集中在语法层次上,而对语义互操作的研究还处于起步阶段。本文从元数据、知识本体和语义Web的角度初步讨论了如何解决电子政务领域的语义互操作问题,并提出了一种电子政务语义信息交换的参考模型。[编者按] 相似文献
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本文深入分析了政务流程的基本特点以及与之相关的工作流管理元模型,并在WfMS参考模型的基础上,以文档型数据库的形式,描述和构造一个通用的,可扩展的工作流管理系统。该工作流管理系统将工作流建模数据与业务流程系统分离,可以有效地支持基于Web应用多层结构环境下的、面向政务流程的各种工作流应用系统的运行。[编者按] 相似文献
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“互联网+体育产业”生态域参考模型研究 总被引:1,自引:0,他引:1
曾伟志 《南京体育学院学报(社会科学版)》2016,(4):77-81
“互联网+体育产业”深度融合是体育产业未来主导的发展方向,是满足广大人民群众日益扩大健身需求的必由之路。在分析我国体育产业经济现状的基础上,建构了“互联网+体育产业”生态域参考模型,该模型以体育产品生命周期为主线,研究了“互联网+体育产业”生态域的资源维、服务维和组织维的构架。通过一足球赛事的实例验证,资源维、组织维和服务维之间以及内部存在复杂、非线性、动态的耦合关系,体育产品和服务全生命周期过程的各个环节均可看作由上述三维中的部分相互关联和映射而成,“互联网+体育产业”生态域参考模型具有一定的可行性和有效性。 相似文献
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LUO Yu-yan 《湖北生态工程职业技术学院学报》2007,(1)
本文介绍OSI RM和TCP/IP RM的产生和发展历程;结构层级及对应关系;各层常用的设备和协议。并尝试以上述的描述为依据,分析二者之间的关系及形成原因;说明它们在网络结构体系中的地位和作用。 相似文献
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数字图书馆,一个真正的跨学科研究领域。目前,来自许多不同研究团体的模型可以被应用到数字图书馆多方面的研究中。例如,开放式档案信息系统的参考模型正式定义了存档、保存和利用数字对象的过程。在国际图书馆协会联合会的支持下发展起来的FRBR(书目记录的功能需求)数据架构,提供了建立书目记录的框架和概念模型。模型的适用范围不只是数字图书馆,而数字图书馆也不仅仅是模型所涵盖的范围,数字图书馆所涉及的范围远远大于这些模型所涵盖的范围。数字图书馆的定义究竟是 相似文献
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快消品将成为电子商务的下一个盈利点,移动电子商务市场即将步入爆发式增长阶段,因此快消品移动电子商务市场前景广阔。在对商业模式概念和构建要素进行文献分析的基础上,基于Osterwalder参考模型,结合近年来比较成功的商业模式经验,从价值主张、目标消费群、分销渠道、客户关系、资源配置、核心竞争力、合作伙伴网络、成本结构以及盈利模式等九个方面,对快消品移动电子商务的商业模式进行构建。 相似文献
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企业的专利策略历来都是各具特色的,没有一种普遍适用的规则,本文提出一种参考模型,企业在具体运用时,可以有针对性地取舍 相似文献