Based on the new research perspective of autonomous choice, this paper studies the demand level of the security object and the affordable housing supply system. The research objectives include: 1) Analyze the development, changes and trends of human's autonomous choice in the evolution of the domestic and foreign housing security supply system , 2) Straighten out the internal relationship between the independent choices and housing security demand and supply; 3) Based on the analysis of the impact of demand satisfaction on household satisfaction, through the construction of the kano model for the housing needs of different security groups Carry out hierarchical classification; 4) According to the results of kano demand classification, combined with better-worse coefficient to analyze the housing demand preference structure of different security groups, and provide an effective reference for the supply of differentiated security services.
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