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A Distributed Algorithm for Web Service Composition Based on Service Agent Model

机译：基于服务代理模型的Web服务组合分布式算法

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摘要

Agent-based service composition has provided a promising computing paradigm for the automatic web service composition. In this paper, a formal service agent model is proposed, which integrates the web service and software agent technologies into one cohesive entity. Based on the service agent model, a distributed planning algorithm for web service composition called DPAWSC is presented. DPAWSC formalizes web service composition into a graph search problem according to the dependence relations among service agents. The key to DPAWSC is that the alternative solution with smaller length has higher priority to be searched than one with larger length. DPAWSC is based on the distributed decision making of the autonomous service agents and addresses the distributed nature of web service composition. We evaluate the algorithm by simulation experiments and the results demonstrate that DPAWSC is effective for its ability to produce the high quality solution at a low cost of communications.
机译：基于代理的服务组合为自动Web服务组合提供了有希望的计算范例。本文提出了一种正式的服务代理模型，该模型将Web服务和软件代理技术集成到一个内聚的实体中。基于服务代理模型，提出了一种用于Web服务组合的分布式规划算法DPAWSC。 DPAWSC根据服务代理之间的依赖关系将Web服务组合形式化为图搜索问题。 DPAWSC的关键在于，长度较小的替代解决方案比长度较大的替代解决方案具有更高的优先级。 DPAWSC基于自治服务代理的分布式决策，并解决了Web服务组合的分布式性质。我们通过仿真实验对算法进行了评估，结果表明DPAWSC能够有效地以较低的通信成本生成高质量的解决方案。

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