Research on the Improvement Methods of Network Model with Generalized Precedence Relations (GPRs)

The network with generalized precedence relations (GPRs) is very useful for project managers. However, it is limited to be used widely in real projects due to its very complex graphical representation which makes it difficult to be understood by the project managers and practitioners. Therefore, some methods are proposed to make the GPRs model structure more clear and concise, which include the conditions of adding backward arcs and the methods of eliminating cycles. And then, an illustrative example manifests that the improved GPRs model is helpful for searching and discriminating all network paths which can be searched by the depth-first-search algorithm efficiently