*5.1. The Type of DSM to Be Used*

Successful project implementation needs to understand the project structure and develop and manage a strategy [63]. The selection framework proposed in this study establishes a process model from the relationship between each activity in the construction process and selects the appropriate or optimal delivery method by identifying the relationship between the activities and rearranging the sequence of activities. The framework can also prove the rationality of the selected delivery method or optimize the order of activities in the delivery method.

DSM can be divided into four systems that are interrelated [47]. Which type of DSM to use should depend on the purpose. When only process analysis and optimization are performed, activity-based DSM is used more [64–66]. The parameter-based DSM can better analyze the probability of repetition, the variability of exchanged information, and the impact of iteration [67]. A team-based DSM can clarify how the implementers of various activities communicate and connect with each other. As mentioned earlier, the project delivery method ultimately determines the scope, time, and division of responsibilities of the organization's activities, and limits an organization or group to undertake a single task or multiple related activities. Through appropriate calculations such as partitions and clusters, participants can be combined and divided to achieve the purpose of optimizing the organization. The choice of project delivery method is always a multi-objective optimization problem that needs to be weighed in terms of objectives, management capabilities, and management methods. Constructing a combination of activity-based DSM and team-based DSM under specific target requirements can help decision makers to allocate personnel and responsibilities reasonably.
