Decrement delay with widest K-shortest paths Q-routing algorithm

During the last few years the Internet has grown tremendously and has penetrated all aspects of everyday life. Starting off as a purely academic research network, the Internet is now extensively used for education, for entertainment, and as a very promising and dynamic marketplace, and is envisioned as evolving into a vehicle of true collaboration and a multi-purpose working environment. Although the lnternet is based on a best-effort service model, the simplicity of its packet-switched design and the flexibility of its underlying packet forwarding regime （IP） accommodate millions of users while offering acceptable performance. At the same time, exciting new applications and networked services have emerged, putting greater demands on the network. In order to offer a better-than-best-effort Internet, new service models that offer applications performance guarantees have been proposed. While several of these proposals are in place, and many QOS-enabled networks are operating, there is still a lack of comprehension about the precise requirements new applications have in order to function with high or acceptable levels of quality. Furthermore, what is required is an understanding of how network-level QOS reflects on actual application utility and usability. In this work a proposal for routing which improves the delay factor and is based on the reinforcement learning is concerned. We use Q-learning as the reinforcement learning technique and introduce K-shortest idea into the learning process. The proposed algorithm is applied to two different topologies. The OPNET is used to evaluate the performance of the proposed algorithm. The algorithm evaluation is done for two traffic conditions, namely low load and high load.     

Numerical simulation research of microcosmic flaws in masonry arch bridge

The way of numerical simulation of flaws in masonry arch bridge has always been concerned by the people who undertake numerical simulation task. This paper adopts the program Ansys and its secondary exploit platform tools to construct three-dimensional model to simulate the damage process of masonry arch bridge. The method that damage surface and yield surface are dealt separately, and dispersion model is used to deal with cracking, is forward to simulate flaws. And the results of numerical simulation have been debated to find the laws of flaws growth and distribution with increasing of load. The research result has important value for online monitor, maintain and reinforce of masonry arch bridge. And the technology that has been forwarded in this paper also supplies for the numerical simulation researcher.     

A measurement approach of trust relation in web service

With the advent and proliferation of web services, quality of service serves as a benchmark to differentiate and select the services. Because trust has been regarded as an essential security relationship within a distributed network environment, quality evaluation of services from the viewpoint of trust presents a significant trend in decision support for selecting service over Internet. Unfortunately, the current research in the context of web services does not accurately reflect the randomness and fuzziness of trust, the basic issue in related research about trust. In this paper, we designed two kinds of trust cloud based on cloud model theory to describe the randomness and fuzziness of trust factors. Furthermore, a formalized calculation was provided to obtain the trust degree. To our knowledge, this is the first investigation into trust of web Service considering the integration of randomness and fuzziness, and applying the cloud model to quantitative evaluation of trust in the field of web services.     

Performance Aware Service Pool in Dependable Service Oriented Architecture

As a popular approach to dependable service oriented architecture （SOA）, a service pool collects a set of services that provide the same functionality by different service providers for achieving desired reliability. However, if the tradeoff between reliability and other important qualities, e.g., performance, has to be considered, the construction and management of a service pool become much more complex. In this paper, an automated approach to this problem is presented. Based on the investigation of service pools in the typical triangle SOA model, two challenges critical to the effectiveness and efficiency of service pools are identified, including which services should be held by a pool and what order these services are invoked in. A set of algorithms are designed to address the two challenges and then a service pool can be automatically constructed and managed for given reliability and performance requirements in polynomial time. The approach is demonstrated on a J2EE based service platform and the comparison results between different pooling algorithms are evaluated.     

A formal framework of multi-agent systems with requirement/service cooperative style

Adopting three kinds of speech acts:request,promise,and inform,this paper analyses the interaction among agents in a kind of multi-agent systems with requirements/services cooperation style(MASr-s).The paper gives the objective model the theoretic satisfaction conditions of three kinds of speech acts in MASr-s.The formal definition of MASr-s has been presented.To evaluate concrete implementation architecture and mechanism of the variant MASr-s.including client/server computing architecture and mechanism,a spectrum of MASr-s has been proposed,which captures direct request/passive service mechanism,direct request /active service mechanism,indirect request/active service mechanism,and peer to-peer request /service mechanism.The Spectrum shows a thread to improve traditional client/server computing.     

Discrete-time delayed standard neural network model and its application

The research on the theory and application of artificial neural networks has achieved a great success over the past two decades. Recently, increasing attention has been paid to recurrent neural networks, which are rich in dynamics, highly parallelizable, and easily implementable with VLSI. Due to these attractive features, RNNs have widely been applied to system identification, control, optimization and associative memories[1]. Stability analysis, which is critical to any applications of R…     

Orientation and Decision-Making for Soccer Based on Sports Analytics and AI:A Systematic Review

Due to ever-growing soccer data collection approaches and progressing artificial intelligence(AI) methods, soccer analysis, evaluation, and decision-making have received increasing interest from not only the professional sports analytics realm but also the academic AI research community. AI brings gamechanging approaches for soccer analytics where soccer has been a typical benchmark for AI research. The combination has been an emerging topic. In this paper, soccer match analytics are taken as a ...     

组合服务自动合成技术

Web服务凭借其良好的平台无关性得到了广泛的关注和运用,但单个Web服务功能单一,不能满足当今日益复杂多变的服务请求.为了能够快速、低成本地满足复杂的用户需求,Web服务组合应运而生.本文首先介绍了各类Web服务的描述模型,然后基于不同的描述方法,结合近年来Web服务组合研究的成果,介绍了Web服务自动合成技术,最后对Web服务组合的未来发展和研究方向做出了展望.     

没yWeb服务选择与匹配的应用现状研究

首先对Web服务的概念、结构进行简单的介绍,其次讨论了关于Web服务不确定性的研究现状,然后对Web服务选择与匹配的研究现状进行了深入的分析。最后结合现有的研究现状进行了分析和讨论。同时,还给出了相关算法复杂性影响因子,由于涉及到的匹配算法和模型较多,所以对研究中找到的匹配算法和模型进行了归类分析。     

Web服务选择与匹配的应用现状研究

首先对Web服务的概念、结构进行简单的介绍,其次讨论了关于Web服务不确定性的研究现状,然后对Web服务选择与匹配的研究现状进行了深入的分析。最后结合现有的研究现状进行了分析和讨论。同时,还给出了相关算法复杂性影响因子,由于涉及到的匹配算法和模型较多,所以对研究中找到的匹配算法和模型进行了归类分析。     

基于Web服务生命周期的测试技术研究进展

Web服务是一种新的分布式计算范型--面向服务的体系结构的具体实现之一.然而,Web服务的松耦合、动态性和可组合性等特点给Web服务测试带来了极大的挑战.如何寻求高效的Web服务测试技术和开发实用的测试工具,是当今软件业界一个亟待解决的课题.当前Web服务的测试方法已经贯穿于服务的开发、预发布、运行以及演化的整个生命周期.提出了从Web服务生命周期的角度分析Web服务测试的重要参数,在此基础之上归纳和比较了近年来出现的一些典型的测试方法和技术,最后展望并探讨了Web服务测试今后的研究方向.     

Web服务组合方法综述

Web服务组合通过重用已有的Web服务满足用户高质量的应用需求,是面向服务架构研究领域的热点问题。该文对当前Web服务组合的研究现状进行了综述,分析了WSC的概念和实现框架。根据研究侧重点及其依赖的技术基础,将WSC方法归为两大类别——基于工作流、状态演算和进程代数模型描述的过程驱动的组合方法和基于语义描述的自动服务组合方法。对WSC的评价模型及其研究与应用中所面临的挑战进行了论述。     

Web service集成标记语言关键技术研究

描述Web service的标记语言在使服务能被人们或软件Agents动态发现方面发挥着重要的作用。学术界和工业界研究小组在服务描述、发现、集成、执行上推出了很多基于XML结构的语言。这些语言中有些已经定义了良好的语义,有些是基于工作流方式的,同时也有一小部分是综合利用其它几个独立的语言而形成。面对这么多都被推荐成为标准的语言,对它们的优点和缺点作深入的分析是十分必要的。本文首先从便于服务描述、发现、集成和执行的角度,分析了Web service集成标记语言所应具有的特性,如表达性、语义支持、可用的支持工具、核心集成机制、对容错及异常处理的支持;然后简要描述了比较熟悉的几种服务集成语言的相关技术;最后对这些语言的关键特性作了比较。     

一种Web服务组合的可信评估方法

软件可信性日益成为软件工程研究中的热点问题,作为软件资源主要形态的Web服务的可信性也受到了越 来越多的关注。目前对于Web服务可信性的研究主要集中在单一服务QoS属性的可信评价,而针对服务组合的可信 性研究较少。提出了一种通用的原子服务可信评佑模型,并结合原子服务在服务组合执行时的权重,给出了一种基于 结构分析的服务组合可信性的评估方法。最后,结合网络购物实例描述了服务组合可信性评估方法的实验过程。     

异构Web集群中的比例伸展因子区分服务

Web集群服务器已被广泛用来提高Web服务器的性能。如何保证Web服务的服务质量（QoS）是一个迫切需要解决的问题。区分服务已成为QoS研究领域中的一个焦点。本文分析了Web请求服务时间的数字特性,并使用M／G／1 FCFS排队模型对Web服务器及Web集群服务器进行了建模。在对模型进行分析的基础上,设计并实现了一种异构Web集群服务器中的比例伸展因子区分服务的方案,并提出了基于概率空间的请求调度算法。请求被分成多个类,无论系统的负载如何,系统确保每类请求的平均伸展因子与事先给定的参数成正比。实际测试表明,所设计的方案满足相对区分服务的可预测性和可控制性的要求。     

面向Web服务重组的平衡多目标遗传算法研究

基于Web服务的电子商务和电子政务已成为未来发展的趋势.由于一个Web服务可能由多个子服务组成,而这些子服务和用户的请求都可能发生变化,因此Web服务的重组越来越普遍,也越来越受到重视.目前相关研究集中在Web服务的描述及管理架构问题上,缺乏对服务重组的理论基础研究.平衡多目标遗传算法(BMGA)在经典GA基础上作了改进,使各方向平衡进化,非主要进化方向也不会妨碍主要进化方向的优化.BMGA被应用到Web服务重组中,试验结果证明了该算法的可行性和先进性.