Evaluation of Urban Functional System

At present, the urban functional system (UFS) has been changing with the rapid development of urbanization, which has brought serious challenges for the decision-making of urban planners. It is of great significance to investigate the robustness evaluation of urban functional system. Firstly, the composition map of urban functional area is obtained. Secondly, the center points of each functional area in the system are extracted to represent each functional area and to establish the coupling relationship between different functional areas. Thirdly, the robustness indices for different functional systems are designed. A series of simulation experiments about attack and damage are designed, and the change trend of robustness indices of urban functional system is investigated. Finally, the evaluation indices are established and a variety of simulation experiments are carried out to analyze the change trend of robustness indices. Our experimental results showed that the local attack in batches mode was the most serious mode to destroy the urban functional system. Therefore, more attention should be paid to avoid or alleviate the influence of the local attack in batches.