基于议题分类的Web服务协商机制

发布时间：2018-01-28 06:26

本文关键词： Web服务协商综合协商策略关联议题议题分类　出处：《东南大学学报(自然科学版)》2013年04期 　论文类型：期刊论文

【摘要】：为解决Web服务组合中精确服务匹配的失效问题,基于博弈论讨价还价折扣率模型提出了一种双边服务协商机制.首先,引入中立协商管理者MA作为协商中介,对协商过程进行协同.然后,针对关联议题和独立议题分别进行协商建模,并设计不同的协商协议.对于独立议题,综合应用时间代价、对手提议和协商管理策略对现有协商策略进行改进;对于关联议题,引入关联议题子集概念,关联议题子集内采用投标模型进行协商,而关联议题子集间则采用独立协商方式.实验结果表明,协商策略的改进和协商管理者的引入加速了独立议题的协商过程.基于议题分类的Web服务协商较好地解决了服务协商中多议题关联的问题,与传统的Web服务协商机制相比,不仅可获得更好的社会效用,而且大幅度减少了协商时间.
[Abstract]:In order to solve the failure problem of exact service matching in Web service composition, a bilateral service negotiation mechanism is proposed based on the bargaining discount rate model of game theory. The neutral negotiation manager MA is introduced as the negotiation intermediary to coordinate the negotiation process. Then, the negotiation modeling for the related issues and the independent issues are carried out, and different negotiation protocols are designed. The existing negotiation strategy is improved by applying time cost, opponent's proposal and negotiation management strategy. For related issues, the concept of subsets of associated issues is introduced, the bidding model is used for negotiation in subsets of associated topics, and independent negotiation is adopted among subsets of associated topics. The experimental results show that. The improvement of negotiation strategy and the introduction of negotiation manager accelerate the negotiation process of independent issues. Web service negotiation based on topic classification can solve the problem of multi-topic association in service negotiation. Compared with the traditional Web service negotiation mechanism, it can not only obtain better social utility, but also greatly reduce the negotiation time.
【作者单位】：东南大学计算机科学与工程学院;东南大学计算机网络与信息集成教育部重点实验室;
【基金】：国家自然科学基金资助项目(61003257,61070158,61070161,61272531,90912002) 国家重点基础研究发展计划(973计划)资助项目(2010CB328104) 国家科技重大专项课题资助项目(2009ZX03004) 教育部博士点基金资助项目(200802860031) 江苏省自然科学基金资助项目(BK2008030)
【分类号】：TP393.09
【正文快照】： Internet的开放性要求Web服务能够以丰富、灵活的交互方式向广大用户提供个性化、可定制的http://journal.seu.edu.cn服务[1].通过服务发现,服务请求者可找到满足其所需要功能的服务提供者集合.但不同服务所具有的QoS属性往往差别很大,并且某些属性本身具有动态性,难以保证完

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