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不同移动用户由于背景兴趣不同,所处情境不同,信息需求也不同。不同移动用户往往访问的是某一些特定领域,并且与其所处的情境有关。本文提出了一种基于本体、情境信息的个性化方法。通过移动用户的MSSDN建立用户本体,结合用户情境,明确用户的需求,从而满足用户搜索个性化要求。 相似文献
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余顺争 《计算机工程与应用》2004,40(14):166-171,186
在移动网络中,移动用户对Internet的访问,具有与通常的外部Internet网络不同的特点。移动用户发出的对信息内容的请求(例如询问前方交通情况和路线),以及无线Internet信息提供商主动向移动用户发出的信息(例如移动用户附近的商品信息广告),与移动用户的位置、移动状态(方向、速度)和个人情况(userprofile)等有关。因此,要建立恰当的无线Internet流量模型和实现QoS(业务质量)控制,需要考虑用户的移动特性和在不同移动状态下访问Internet的概率分布。该文将建立一个新的定量分析模型,用半马尔可夫过程和一般的状态空间来描述移动用户的行为;并基于该移动模型,建立相应的移动用户对信息内容的访问模型、描述移动用户请求的到达过程;进而得到无线Internet业务质量参数的估计,即无线Internet对移动用户请求的平均响应时间、对无线侧和有线侧传输带宽的需求等;利用这些结果,可以实现无线资源的动态分配和允入控制。该文还将分析无线代理网关的性能、缓存容量需求,并给出改善平均响应时间的可行方案。最后用计算机模拟对提出的理论分析进行验证。 相似文献
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《计算机科学与探索》2019,(9):1471-1480
随着移动互联网的快速发展和智能终端设备的迅速普及,服务类型与服务内容的日新月异,为移动用户带来严重的移动信息过载问题,如何为用户提供更好的服务推荐是亟待解决的难题。提出了一个移动情景和用户轨迹感知的众包服务推荐策略,首先对历史日志中的位置坐标通过聚类算法聚合成区域,然后挖掘出用户在不同移动情景下的轨迹模式,进而提取出移动规则并判断每条规则所属的情景;在进行众包服务推荐时,通过实时感知到的位置轨迹和移动情景信息,预测用户即将到达的位置区域,从而将区域内的众包服务推送给该用户。提出的预测方法避免了额外增加用户执行任务的时间、行程、费用等成本,给用户推荐更适合的任务,提高用户服务满意度。 相似文献
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为有效保障移动用户不同业务的服务质量,拓展策略机制的应用,利用策略形式的业务QoS属性及移动节点移动和资源需求的预测信息,用元策略自动生成相应的控制策略,实现切换过程自适应的资源管理。通过分析和仿真,该自适应切换方案在保证切换掉线率的前提下,最小化新呼叫阻塞率,为用户提供较好的QoS保证,其特点在于自适应性,可以根据当前网络状况自动进行重要参数的调整,另外,使用策略,可提供不同的优先级,能方便地进行算法定义和选择,相对于传统方法更灵活。 相似文献
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针对当前移动用户兴趣点标注没有统一的语义本体这一问题,通过对移动用户兴趣点分类,建立了 POI概念本体层次树,将用户标注的POI信息与本体树节点通过一种改进的映射方法建立映射关系,为移动用户标注信息提供统一的规范化语义。实验收集多名志愿者5周的真实标注信息来评价该方法,实验结果表明该方法具有较高的准确率。 相似文献
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针对移动网络中用户的移动、数据丢失、用户定位不精确导致的用户挖掘准确性低的问题,提出了一种基于卡尔曼滤波的噪声数据纠正与丢失数据补偿的移动用户群挖掘算法,提高空间与时间上具有相关性的移动用户群挖掘的有效性。详细的仿真实验以及与现有的基于距离的移动用户群挖掘算法DMUM的对比表明,该算法不仅具有更少的执行时间,同时有效地提高了移动用户群挖掘的召回率与准确率。 相似文献
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Requirements engineering for e-business advantage 总被引:1,自引:0,他引:1
As a means of contributing to the achievement of business advantage for companies engaging in e-business, we propose a requirements
engineering framework that incorporates a business strategy dimension. We employ Jackson’s Problem Frames approach, goal modeling,
and business process modeling (BPM) to achieve this. Jackson’s context diagrams, used to represent business model context,
are integrated with goal models to describe the requirements of the business strategy. We leverage the paradigm of projection
in both approaches as a means of simultaneously decomposing both the requirement and context parts, from an abstract business
level to concrete system requirements. Our approach maintains traceability to high-level business objectives via contribution
relationship links in the goal model. We integrate use of role activity diagrams to describe business processes in detail
where needed. The feasibility of our approach is shown by a well-known case study taken from the literature. 相似文献
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Belko Abdoul Aziz Diallo Thierry Badard Frédéric Hubert Sylvie Daniel 《GeoInformatica》2014,18(2):405-433
Business professionals are increasingly mobile and should be supported by suitable mobile Decision Support Systems (DSS). In our previous work, we have established that such suitable mobile DSS should be (i) GeoBI(Geospatial Business Intelligence)-enabled and (ii) context-based, and have addressed issues regarding context characterization and context modeling. The present paper deals with mobile GeoBI context-based reasoning. Through realistic scenarios, it highlights (i) the requirement for context-based reasoning to enhance mobile GeoBI experience, (ii) the need for contextual metrics/statistics to help mobile business professionals discover their local context, (iii) the need for crossing business performance metrics with contextual metrics to help mobile business professionals in discovering the context hidden behind business performance figures, and proposes convenient solutions to tackle these needs. 相似文献
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Talita da Cunha Mattos Flávia Maria Santoro Kate Revoredo Vanessa Tavares Nunes 《Computers in Industry》2014
A business process is a set of activities performed in a coordinated manner within an organizational and technical environment that is aimed toward a business goal. The flexibility of a process is related to an understanding of the unexpected events that occur when people, systems and resources interact and require adjustments. Thus, business processes must be designed to respond to information about different events and their specificity. This information defines what the literature calls “context”. To broaden the perception of context in the case of a business process, this work proposes an approach to characterize the context of a business process activity in a given domain through conceptual models structured in layers. A case study was conducted to evaluate the proposal, which provided evidence of the applicability of the model. 相似文献
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While studies have shown the effect of context on IS planning as important, the incorporation of contextual factors has not been systematic and the categorization of factors has not been made explicit and some factors have only been superficially examined. My study examined the interrelationships amongst four domains of context and considered their influence on IS planning. The corresponding impact of planning on performance was also assessed. Data was collected from 116 South African companies and results revealed that the internal IS context mediated the effects of environmental and organisational level variables on IS planning practice. Results further showed that IS planning intensity and degree of integration with business planning was strongly influenced by managerial planning expertise, and had positive effects on business management's commitment to IS as well as on IS contribution to business performance. Results have important implications in organisational IS planning and performance. 相似文献
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《Computers in Industry》2014,65(9):1218-1231
Today, enterprise applications provide large amounts of data and finding the right information on time for a given purpose is often a challenge. In these environments, users do not know what information is important, why it is important and finally, how to find this important information. Therefore, an enterprise application has to decide which information is relevant in certain a situation for certain a user. In order to accomplish that, the context of the information must be taken to account. Moreover, this application must be able to capture the context of the application user as well as the overall business context which describes the situation in which information is relevant. In this paper we propose an ontology-based context model which captures the general concepts about user and business context. Also, we discuss the challenges for context reasoning and interpreting and we present a case study to demonstrate the benefits of the developed concepts. 相似文献
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This research studies E-business audit as a specialized service rendered in an information technology intensive environment. A service model is used to research the E-business audit context. Here auditing is viewed as a specialized technical service conducted in the context of E-business technologies, business processes, and people involved in E-business transactions. The specialized audit service is provided to the E-Business transacting firms that in most cases involve transactions between customers and suppliers. A field study of information technology auditors showed that both knowledge of the business processes and of the technologies were critical for them to render reliable and accurate E-business audit findings. The results showed the need for higher training levels in advanced IT methods and tools for technology auditors in rendering IT audit judgments for the business-to-business (B2B) context. Thus, these results provided support for the service model that calls for the appropriate knowledge and use of technologies, business processes, and people in providing service. 相似文献
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The specifics of business intelligence systems compared to operational IS motivate the necessity to research the business intelligence systems acceptance determinants separately. The authors followed an exploratory approach in order to conceptualize a business intelligence acceptance model. Their findings show that in the Business Intelligence Systems context, there is a significant emphasis on organizational factors, such as result demonstrability, social influence, and facilitating conditions with sufficient resources that help build an adequate information culture all substantially influencing the effective acceptance of business intelligence systems. 相似文献
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Fabian Eggers Kathi J. Lovelace Frederik Kraft 《Creativity & Innovation Management》2017,26(3):266-276
Research suggests a positive link between critical thinking and creativity. However, this relationship has not been measured in an empirical study. This study aims to explore whether critical thinking can serve to enhance creativity and whether creativity positively mediates the relationship between critical thinking and business performance. In this study, we analyse these relationships within the entrepreneurial context of a web‐based business start‐up simulation. We examined data from 26 teams of three to four senior business students and found partial support for our hypotheses. Critical thinking positively influenced creativity, measured as the total number of unique product designs. Creativity (unique product designs) also positively mediated the link between critical thinking and performance. This effect, however, did not exist when creativity was assessed through advertisement designs. This research contributes to entrepreneurship and innovation management by demonstrating the importance of critical thinking as a basis for creativity and testing this relationship in a business start‐up simulation context. 相似文献