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

(1)利用构建的都市数据库，对集聚经济进行了定量估计，并在此基础上对东京是否过大进行了实证检验。(2)完成了东京都市区官方地价空间数据库的构建，并对土地市场进行了时空分析。采用非参数型估计方法建立了功能系数回归模型，并将其应用于官方土地价格数据的分析。我们对诸如靠近商业设施（如购物中心）和绿地（如公园和森林）对地价的影响有多大以及郊区和城市中心之间这些影响是否不同等问题进行了统计测试(3)我们为回归模型开发了一种新的脊型估计器，并检查了估计器的性质。利用新型估算器，构建了经质量调整的二手共管住宅价格指数。(4)利用空间数据库，应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贝叶斯估计。(5)建立了具有网络效应的社会间接资本投资的成本效益分析新方法。在此基础上，指出了日本交通运输投资成本效益手册中的一个错误。(6)在垄断竞争的经济地理学和国际经济学框架下，分析了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