基于主体的语义Web服务的Petri网模拟方法

语义web上的服务在执行时可以将其视为一个智能主体的行为执行的过程，并且能够通过智能主体管理语义web上的服务。将语义web上存在的主体分为用户主体，媒介主体和服务主体三类。当一个用户主体需要多个不同的web服务来完成其目标时，这些服务将被组装为一个组合服务。对组合服务的动态执行进行准确的模拟和全面的分析是保证用户目标实现的关键问题，利用Petri网的方法对组合语义web服务进行模拟和动态执行分析是关于此问题的一种实用并且有效的方法。

Modeling agent-based Semantic Web Services with Petri Nets

When executing, services on the semantic web can be available as a semantically described behaviors within FIPA compliant agents (user agents, middle agents and service agents) that makes the services execute with intelligent behaviors. When a service user needs some different services to achieve his goal, these services should be combined into a composite service. We will show how to model and analyze dynamic performance semantic of the composite service with Petri nets that will help user agents determine to execute and adapt the service.