Abstract: With augmenting cognizance of environmental issues, there is a growing concern for sustainable construction due to the negative environmental impacts resulting from construction activities. Although green construction has been advocated globally, the lack of scientific and systematic green construction assessment tools is a key factor affecting the adoption of green construction. In this study, a methodology for green construction assessment was developed based on the grey system theory, which allows for a quantitative evaluation of environmental performance for construction activities. We integrate the advantages of both subjective and objective weighting methods to overcome the one-sidedness of a single weighting method. Besides, we resort to mutual information to determine a more reasonable index weight by eliminating the possible information overlap among indicators. The evaluation results of the simulation case demonstrate the effectiveness of the proposed approach for green construction evaluation. 

Key words: Green Construction, Grey Clustering Comprehensive Evaluation, Grey System Theory, Mutual Information