| 1.PrologueFrom the conference about "Environment and Progress" in 1992, sustainable development become a popular slogan in a lot of fields including city design. Almost everything is connected with it. Now it's time to put it into action. That is to say, we cannot restrict it in the limited fields such as environment or resource etc; cannot put those issues into the structure of sustainable development and discuss them again and again, while we should work over it deeply, and research it with the key issues.2.Discuss of the existing problemsFor connotation of sustainable development is so profound and complex, there are many problems to be settled. Finding a practicable and quantified index system and estimate method of sustainable development is one of them. With it we can scale and appraise the sustainable development level and capability of a country or a region; we can analyze the progress and effect and direct the tactic. As we can see, sustainable development is a necessary policy tool that is an important information resource to accelerate the public's involving in. Quantified analytic method of sustainable development is the core foundation to prepare for sustainable development tactic.We have talk enough about the index system and estimate method of sustainable development but still less about regional human settlement. Flowing we list some problems in this field:I. The mode of index system in sustainable development about regional human settlement is uncertainty.Now a day, there are three attitudes on the index system of sustainable development about regional human settlement: (l)Found an analytic system with clear framework. But it can only analyze the result while cannot control the progress.(2)Make complement for traditional index system.(3)Found a new integrative index system which can describe the interactive relationship between different subsystems.The most prevalent method of index system is nun dimension index system. That is to say the dimensional index should be transferred into nun dimension index. This method is based on the ready statistic data and information; it's a cheap and mature way. However it cannot reflect sustainable development correctly, what's more it cannot take the reins of the progress.Which one is the most suitable? There're two questions to be answered:(l) Should the mode be only an analytic system or an integrative index system including reflection, control, analyze and warming? (2) If it's a new system, then should it be founded by one step or step by step? I think we should build a wholly new mode and index system by new conception, while to achieve it should be divided into two steps. Firstly we should investigate the actuality carefully to construct a preparatory frame and apply the frame to obtain necessary experience. Secondly optimize the preparatory frame and construct a mature frame, which is scientific and correspond to the conception of sustainable development.II. Lots of difficulties to construct the index system in sustainable development aboutregional human settlement(1)Theory cannot fit the reality. (2)The sources of data are widely divergent. (3)Lack of cases for investigation.III. The disadvantage of the index system in sustainable development about regional human settlementWhen choose estimate index, on the one hand, we gain too many indexes for chasing for complement; on the other hand, we are lack of a filter tool for avoiding iteration. When it comes to confirm the quotient of the index, a lot of traditional methods depend too much on men's experience. When talk about the estimate mode, almost all the modes are not so perfect. They are always not so intuitionist and choose the target value and benchmark value to be the reference that will affect the result too much.3. Use neural networks to construct the mode of sustainable development index systemWith the green impact to Architecture, the research of index system in sustainable development about regional human settlement becomes another vanward is...
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