Kibria Muhammad Golam, Ali Sajjad, Jarwar Muhammad Aslam, Kumar Sunil, Chong Ilyoung
Department of CICE, Hankuk University of Foreign Studies, 02450 Seoul, Korea.
Sensors (Basel). 2017 Sep 22;17(10):2180. doi: 10.3390/s17102180.
Due to a very large number of connected virtual objects in the surrounding environment, intelligent service features in the Internet of Things requires the reuse of existing virtual objects and composite virtual objects. If a new virtual object is created for each new service request, then the number of virtual object would increase exponentially. The Web of Objects applies the principle of service modularity in terms of virtual objects and composite virtual objects. Service modularity is a key concept in the Web Objects-Enabled Internet of Things (IoT) environment which allows for the reuse of existing virtual objects and composite virtual objects in heterogeneous ontologies. In the case of similar service requests occurring at the same, or different locations, the already-instantiated virtual objects and their composites that exist in the same, or different ontologies can be reused. In this case, similar types of virtual objects and composite virtual objects are searched and matched. Their reuse avoids duplication under similar circumstances, and reduces the time it takes to search and instantiate them from their repositories, where similar functionalities are provided by similar types of virtual objects and their composites. Controlling and maintaining a virtual object means controlling and maintaining a real-world object in the real world. Even though the functional costs of virtual objects are just a fraction of those for deploying and maintaining real-world objects, this article focuses on reusing virtual objects and composite virtual objects, as well as discusses similarity matching of virtual objects and composite virtual objects. This article proposes a logistic model that supports service modularity for the promotion of reusability in the Web Objects-enabled IoT environment. Necessary functional components and a flowchart of an algorithm for reusing composite virtual objects are discussed. Also, to realize the service modularity, a use case scenario is studied and implemented.
由于周围环境中存在大量相互连接的虚拟对象，物联网中的智能服务功能需要重用现有的虚拟对象和复合虚拟对象。如果为每个新的服务请求创建一个新的虚拟对象，那么虚拟对象的数量将呈指数级增长。对象网络在虚拟对象和复合虚拟对象方面应用服务模块化原则。服务模块化是支持对象网络的物联网（IoT）环境中的一个关键概念，它允许在异构本体中重用现有的虚拟对象和复合虚拟对象。在相同或不同位置出现类似服务请求的情况下，可以重用存在于相同或不同本体中的已实例化虚拟对象及其组合。在这种情况下，搜索并匹配类似类型的虚拟对象和复合虚拟对象。它们的重用避免了类似情况下的重复，并减少了从其存储库中搜索和实例化它们所需的时间，其中类似类型的虚拟对象及其组合提供类似的功能。控制和维护一个虚拟对象意味着在现实世界中控制和维护一个真实对象。尽管虚拟对象的功能成本只是部署和维护真实对象成本的一小部分，但本文重点关注虚拟对象和复合虚拟对象的重用，并讨论虚拟对象和复合虚拟对象的相似性匹配。本文提出了一种支持服务模块化的逻辑模型，以促进支持对象网络的物联网环境中的可重用性。讨论了重用复合虚拟对象所需的功能组件和算法流程图。此外，为了实现服务模块化，研究并实现了一个用例场景。
