关键词: 服务工程, 服务价值, 价值依赖, 分层超图, 服务系统设计

Abstract: There might be dependences and associations among various expected values, therefore the inter-dependencies among values should be particularly considered during service system design. Based on the introduction of service value, concept “value dependency” was defined and classified into five categories according to production mechanism. A value dependency model based on layered hyper-graph was proposed，which was formally defined as layered Value Dependency hyper-Graph (VDG). Based on this model, features such as transitivity, decomposition and dependence were discussed. And the process of service analysis and service composition based on this model were also discussed. A real-life case study on Ocean Transportation Service (OTS) was put forward. As a supporting tool to realize optimized value for service system analysis and design, the proposed model established bridge between the high-level value expectations and low-level quality of service expectations of service elements.

Key words: service engineering, service value, value dependency, layered hyper-graph, service system design