Research on Civil Engineering Cost Prediction Based on Decision Tree Algorithm

: Civil engineering includes not only all engineering construction on the ground, but also the maintenance, exploration and design of equipment and materials used in the whole construction process. During the construction of civil engineering, there is no scientific and reasonable supervision system for the supervision of construction, which greatly affects the quality of engineering and the control and management of engineering cost. In this paper, through the application of DT (Decision tree) algorithm, the research of civil engineering cost prediction is carried out. Aiming at the application of the algorithm in civil engineering cost management, this paper tries to improve the C4.5 algorithm. DT civil engineering life-cycle cost analysis and prediction model is trained by training set, and the optimal result of civil engineering life-cycle cost analysis is obtained by inputting sample data for model prediction. The application results show that the above algorithm has lower computational complexity and higher prediction efficiency in civil engineering cost prediction, which can better meet the needs of actual civil engineering cost analysis and prediction.