model uncertainty model structure uncertainty Jinjing Guo Oliver He https://www.tandfonline.com/doi/abs/10.1076/iaij.4.1.5.16466 Jie Zheng uncertainty about the form of the model itself. Model structure uncertainty arises from a lack of sufficient understanding of the system (past, present, or future) that is the subject of the policy analysis, including the behaviour of the system and the interrelationships among its elements. 模型结构不确定性