The Prediction of Mould Project Duration Based on Recursive Network

The critical path method (CPM) is often used to make the project plan and predict the project duration in mould manufacturing projects. For generating manageable networks, the CPM networks assume that networks are directed without loops. So in CPM, recursive works are ignored. But in actual mould manufacturing, reworking of tasks are frequent and inevitable, and then they will result in project delaying. So the planned project duration is often less then the actual one. The paper added the loops in the CPM network, and created the prediction model of the duration based on reworking using the Markov chains and solved the probabilities of the mould project duration.