A Minimum-Edge Diagraph Model for Evaluating Project Schedule Complexity

H.A. Bashir (Oman)


Scheduling, complexity, AON network, and minimumedge diagraph


Since redundant relationships in an AON project network indicate that the schedule is more complex than it actually is, this paper proposes to transform the network into a minimum-edge diagraph model which contains no redundant relationships. The transformation methodology is adapted from interpretive structural modeling (ISM), a well-established methodology for simplifying the complex structure of interacting elements. The transformation steps were explained through a demonstrative example of a simple hypothetical project. The application of the methodology to the AON network of a real project shows that it is easy to use yet effective in removing redundant relationships.

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