The Construction and Management of Spatial Databases in Economics and Business Administration and the Development of Analytical Methodologies for them

(1)利用我们开发的大都市数据库，对集聚经济进行了定量估算，并在此基础上对东京是否太大进行了实证检验。(2)完成了东京都官方地价空间数据库的建立，并对土地市场进行了时空分析。建立了基于非参数类型估计方法的函数系数回归模型，并将其应用于官方地价数据的分析。我们对商业设施(如购物中心)和绿化带(如公园和森林)附近对地价的影响程度以及这些影响在郊区和市中心是否不同等问题进行了统计检验。(3)我们为回归模型开发了一种新的脊型估计量，并检验了估计量的性质。利用新型估计量，构建了二手住宅质量调整价格指数。(4)利用空间数据库，运用马尔可夫链蒙特卡罗方法，对影响营销活动效果和消费者空间购买行为的空间因素进行了贝叶斯估计。(5)建立了具有网络效应的社会管理资本投资的成本收益分析方法。在此基础上，指出了日本现行交通投资成本效益手册中的一个错误。(6)从经济地理学和国际经济学的角度分析了垄断竞争框架下集聚经济的各种经济效应

(1)Using the metropolitan database that we have developed, we obtained quantitative estimates of agglomeration economies, and, based on the estimates, we tested empirically if Tokyo is too big.(2)We have completed building the spatial database of the official land prices of the Tokyo metropolitan area, and have conducted a spatio-temporal analysis of the land market. We also developed a functional coefficient regression model that use non-parametric type estimation methods and applied it to the analysis of the official land price data. We conducted statistical testing of issues such as how big are the effects on land price of proximity to commercial facilities (such as shopping centers) and to green zones (such as parks and forests) and whether or not these effects are different between the suburbs and city centers(3)We developed a new ridge type estimator for a regression model and examined the properties of the estimator. Using tile new type estimator, we constructed a quality-adjusted price index for second-hand condominium housing.(4)Using the spatial database, we applied Markov Chain Monte Carlo method to obtain Bayes estimates of spatial factors affecting the effects of marketing activities and consumers' spatial purchasing behavior.(5) We established a new cost-benefit analysis methodology for investments in social overhead capital that has network effects. Based on these works, an error in the cost-benefit manual for transportation investment used in Japan was pointed out(6) We analyzed a variety of the economic effects of agglomeration economies in the monopolistic competition framework in economic geography and international economics