Application of set pair analysis in urban planning project comprehensive evaluation

For all kinds of uncertainties such as fuzzy uncertainty, random uncertainty, indeterminate-known uncertainty, unknown and unexpected incident uncertainty, and uncertainty which is resulted from imperfective information, the set pair analysis (SPA) studies the relationship between the certainty and the uncertainty of a thing from three aspects of identity-discrepancy-contrary (IDC), and processes uniformly the uncertainties of a system that is resulted from the above uncertainties using the connection degree (μ). Because the study of this theory is carried through from the whole of uncertainties, and doesn´t need to distinguish definitely which part is fuzzy uncertainty or random uncertainty or other uncertainties, this theory is relatively practical. SPA has been successfully applied to many fields though there is only more than ten years from its birth to now. In this paper, SPA is applied to the urban planning project comprehensive evaluation. In the course of the evaluation, such indexes as cost of construction, traffic convenience degree, virescence coverage rate, etc. are taken into account.