An assessment method for the quality of service （QoS） of virtual knowledge communities （VKC） is proposed based on fuzzy theory and analytic hierarchy process （AHP）. The QoS is evaluated in terms of Website desig...An assessment method for the quality of service （QoS） of virtual knowledge communities （VKC） is proposed based on fuzzy theory and analytic hierarchy process （AHP）. The QoS is evaluated in terms of Website design, reliability, responsiveness, trust, personalization, and information quality. The cognitive QoS and the QoS evaluated by assessors are compared to analyze which QoS of the VKC should be improved urgently and which indicators keep leading positions, and to assist administrators of the VKC on measuring and understanding current status and implementation effect of the QoS.展开更多
In this paper,we present the virtual knowledge graph(VKG)paradigm for data integration and access,also known in the literature as Ontology-based Data Access.Instead of structuring the integration layer as a collection...In this paper,we present the virtual knowledge graph(VKG)paradigm for data integration and access,also known in the literature as Ontology-based Data Access.Instead of structuring the integration layer as a collection of relational tables,the VKG paradigm replaces the rigid structure of tables with the flexibility of graphs that are kept virtual and embed domain knowledge.We explain the main notions of this paradigm,its tooling ecosystem and significant use cases in a wide range of applications.Finally,we discuss future research directions.展开更多
文摘An assessment method for the quality of service （QoS） of virtual knowledge communities （VKC） is proposed based on fuzzy theory and analytic hierarchy process （AHP）. The QoS is evaluated in terms of Website design, reliability, responsiveness, trust, personalization, and information quality. The cognitive QoS and the QoS evaluated by assessors are compared to analyze which QoS of the VKC should be improved urgently and which indicators keep leading positions, and to assist administrators of the VKC on measuring and understanding current status and implementation effect of the QoS.
文摘In this paper,we present the virtual knowledge graph(VKG)paradigm for data integration and access,also known in the literature as Ontology-based Data Access.Instead of structuring the integration layer as a collection of relational tables,the VKG paradigm replaces the rigid structure of tables with the flexibility of graphs that are kept virtual and embed domain knowledge.We explain the main notions of this paradigm,its tooling ecosystem and significant use cases in a wide range of applications.Finally,we discuss future research directions.
