“…Figure 3 shows that the AACE network can be divided into several groups: a singleton consisting of the Project control plan implementation (8) process falling at the center of the AACE model and considered as a core process to project control; closest to the singleton, a group of three core sub-processes, namely Project performance assessment (11), Forecasting (12), and Change management (13), which are part of the Project control performance assessment process; a group of five inputs and outputs (15,19,47,59, and 88) that gravitate around the core sub-processes listed above; a group of six sub-processes located not so far from the center and composed of the following sub-processes: Project scope and execution strategy development (1), Resource planning (4), Procurement planning (7), Project cost accounting (9), Progress and performance measurement (10), and Project historical database management (14); and at the periphery of the network, two distinct groups, each composed of two sub-processes belonging to the Project planning and control process: a group made up of the Schedule planning and development (2) and the Cost estimating and budgeting (3) sub-processes, and another group that includes the Value analysis and engineering (5) The indices of in-degree centrality and out-degree centrality for the PMBOK network support the finding that Project management plan (1), Work performance information (5), Organizational process assets (7), Change requests (10), Work performance data (15), Project management plan updates (39), Project document updates (40), and Organizational process assets updates (43) are central inputs and outputs to this network. Other PMBOK items with high in-degree and/or out-degree were the Monitor and control project work (8) and the Control quality (29) processes.…”