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121.
ContextThe adoption of Service-oriented Architecture (SOA) and Business Process Management (BPM) is fairly recent. The major concern is now shifting towards the maintenance and evolution of service-based business information systems. Moreover, these systems are highly dynamic and frequent changes are anticipated across multiple levels of abstraction. Impact analysis and change propagation are identified as potential research areas in this regard.ObjectiveThe aim of this study is to systematically review extant research on impact analysis and propagation in the BPM and SOA domains. Identifying, categorizing and synthesizing relevant solutions are the main study objectives.MethodThrough careful review and screening, we identified 60 studies relevant to 4 research questions. Two classification schemes served to comprehend and analyze the anatomy of existing solutions. BPM is considered at the business level for business operations and processes, while SOA is considered at the service level as deployment architecture. We focused on both horizontal and vertical impacts of changes across multiple abstraction layers.ResultsImpact analysis solutions were mainly divided into dependency analysis, traceability analysis and history mining. Dependency analysis is the most frequently adopted technique followed by traceability analysis. Further categorization of dependency analysis indicates that graph-based techniques are extensively used, followed by formal dependency modeling. While considering hierarchical coverage, inter-process and inter-service change analyses have received considerable attention from the research community, whereas bottom-up analysis has been the most neglected research area. The majority of change propagation solutions are top-down and semi-automated.ConclusionsThis study concludes with new insight suggestions for future research. Although, the evolution of service-based systems is becoming of grave concern, existing solutions in this field are less mature. Studies on hierarchical change impact are scarce. Complex relationships of services with business processes and semantic dependencies are poorly understood and require more attention from the research community. 相似文献
122.
In the present research, N = 48 adults without university education were tasked to conduct two web searches on unfamiliar health-related issues. Three research objectives were examined: the predictive value of individuals’ Internet-specific epistemic beliefs for their navigation behavior and post-search decisions in Web Search Task 1; the effects of a short source evaluation intervention on individuals’ navigation behavior and post-search decisions in Web Search Task 2; and the effects of the source evaluation intervention on individuals’ Internet-specific epistemic beliefs. Results showed that beliefs concerning the justification by multiple sources were positively related to the time spent on reliable objective web pages and to the likelihood to make a post-search decision that was in accordance with the objective pages. Beliefs that the Internet is a reliable knowledge resource were also positively related to the time spent on objective pages as well as to greater certainty in the post-search decision. Second, in Web Search Task 2, the intervention group spent more time on objective web pages, was more likely to make a decision that was in accordance with these pages, and was more certain of their decision than the control group. Third, one week after the intervention, individuals possessed stronger beliefs concerning the justification by multiple sources than before. In conclusion, the present research indicates that both adaptive Internet-specific beliefs and a short source evaluation intervention have positive effects on non-university educated adults’ online health information seeking and that their Internet-specific epistemic beliefs can be fostered through such an intervention. 相似文献
123.
Lorenzo Gatti Marco Guerini Oliviero Stock Carlo Strapparava 《Computational Intelligence》2015,31(4):669-683
The need for creativity is ubiquitous, and mobile devices connected to Web services can help us. Linguistic creativity is widely used in advertisements to surprise us, to get our attention, and to stick concepts in our memory. However, creativity can also be used as a defense. When we walk in the street, we are overwhelmed by messages that try to get our attention with any persuasive device at hand. As messages get ever more aggressive, often our basic cognitive defenses—trying not to perceive those messages—are not sufficient. One advanced defensive technique is based on transforming the perceived message into something different (for instance, making use of irony or hyperbole) from what was originally meant in the message. In this article, we describe an implemented application for smartphones, which creatively modifies the linguistic expression in a virtual copy of a poster encountered on the street. The mobile system is inspired by the subvertising practice of countercultural art. 相似文献
124.
针对繁多异构的移动客户端接入Web应用系统的问题,提出一个基于REST(Representational State Transfer)的解决方法并给出一个基于MVC(Model-View-Controller)模式的具体的开发框架,通过RESTful Web服务连接移动客户端的View/Controller层与Web系统的Model层。定义了由Web系统的model层定义RESTful Web服务的具体方法和规则。理论分析与实际应用说明了该方法的有效性。 相似文献
125.
126.
组合服务通常运行在开放、变化和不确定的互联网环境中.动态复杂的运行环境,使得组合服务的执行具有不确定性和不可靠性,从而制约了服务组合技术的实际可用性.针对该问题,面向环境的分析与建模,提出了一种基于EQ规则的组合服务运行时自适应方法.该方法在记载组合服务的执行日志和各备选服务的运行环境数据的基础上,挖掘得到反映“一个备选服务在特定的环境状态下所表现出的质量会如何”的EQ规则库,从而指导组合服务如何响应实时产生的各类环境变化事件,以驱动组合服务的运行时自适应,保障其可靠运行.仿真实验结果表明:该方法能够提高组合服务在动态环境中的服务质量,增强其运行稳定性,是一种有效的组合服务运行时自适应方法. 相似文献
127.
128.
基于Hessian半监督特征选择的网络图像标注 总被引:1,自引:0,他引:1
针对半监督特征选择算法进行了研究,采用有标签图像和无标签图像的半监督特征选择方法来提升网络图像标注的性能。基于二阶Hessian能提出一个新的半监督特征选择方法,该方法具有更好的局部拓扑结构保持特性和推断能力,从而能够克服基于图拉普拉斯半监督学习方法的缺点。将所提出的半监督特征选择算法应用到网络图像标注任务中,在两个大规模网络图像数据库上进行了实验,结果表明Hessian半监督特征选择方法优于拉普拉斯半监督特征选择方法,适合大规模网络图像标注。 相似文献
129.
网络协议是网络通信中一系列标准的集合,未知协议的识别和分析对网络监管、保障网络安全具有重大意义。协议识别技术多种多样,但大都不适用于二进制的协议识别。在此针对现有的协议识别技术的局限性,提出了一种在双方单协议通信环境下的多种类型二进制数据帧的协议识别方法。该方法首先利用n-gram技术对数据帧进行分割,然后利用无监督的特征选择算法提取特征串集合,从而利用聚类算法实现协议消息的识别。最后在ICMP上对该方法进行评估,消息识别的准确率和召回率均可达到90%以上。 相似文献
130.
随着经济的快速发展和国民生活水平的提高, 人们对健康的需求在增加, 健康领域的人群消费在逐步的提高, 如何在不断加快的生活节奏下寻求一种动态便捷、流程简单的健康管理方式也成为人们普遍关注的焦点. 本文基于开源移动终端Android平台, 设计并研发了一个能够实时展现用户的重要身体指标走势的健康管理信息系统. 该系统将具有强大计算和存储能力的云端技术与移动终端相结合, 可以让用户随时随地进行查看; 同时把用户的各种健康信息图形化、数据化, 从用户出发, 最大限度节约用户使用成本, 最终实现系统、科学而友好的健康信息管理. 相似文献