“…Other keywords that most frequently co-occurred with prefabrication included modular construction, BIM, construction, point cloud, sustainability, innovation, lean construction, IoT and genetic algorithm. The clusters and connecting lines between keyword nodes in Figure 5 show these main research areas in EAT related to MPC: (1) EAT research in MPC is often linked to BIM [8,24], which is in the same cluster with RFID [10][11][12]22,[45][46][47][48][49][50] and energy saving [51]; (2) EAT in MPC does not simply apply to modular construction [52,53] but involves off-site construction [54]; (3) EAT in MPC is also widely used in prefabricated construction for construction project management [55], supply chain management [56] and digital construction using IoT [57], and literature review is one of the main research methods used in investigating EAT related to MPC. Some scholars have also studied the status quo of EAT research in the MPC field through the form of literature review [58,59]; (4) Point cloud [60], laser scanning using lidar and photogrammetry [61,62] and machine learning [63] are used in the construction progress monitoring [64] and quality control [65] of prefabricated construction; (5) Genetic algorithm is also used to optimise structural design and sustainable design in prefabrication [66,67]; (6) 3D printing and deep learning are also gradually applied in the MPC field for digital construction, promoting the transformation of the traditional construction industry to construction automation [58,68,69]; (7) Simulation is also often used in the MPC field for life cycle assessment...…”