基于语义Web的仿真服务动态发现机制

Semantic Web-based approach to simulation services dynamic discovery

仿真服务的动态发现是进行基于Web的可组合可扩展仿真研究的首要步骤。首先,基于OWL-S本体规范建立了仿真服务描述模型,对仿真服务与仿真需求进行了形式化表示;然后,研究了网格和Web服务技术支撑下的仿真服务动态发现系统结构,以及基于语义Web和领域本体的动态发现机制;进而,提出了基于本体的服务匹配算法,包括领域定位算法和服务定位算法两部分,领域定位算法大大降低了进行服务定位时候选服务集合的大小,有效地保证了服务匹配精度和效率;最后,通过模拟的实验数据对基于本体的匹配算法的性能进行了分析。

Dynamic discovery of simulation services is the foremost step for the research of extensible and composable simulation.First,description model for simulation services based on OWL-S ontology are established.Simulation services and simulation requirement have been formalized.Then,we analyze the structure of simulation services dynamic discovery system supported by Grid and Web services,where semantic Web and ontology based dynamic discovery mechanism are particularly investigated.Further,we propose ontology-based matching algorithm,which is a two-step process including domain locating and service locating. This method efficiently resolves exact matchmaking between services and requirements,whose performance has been analyzed in the end.