Conjoint modeling of residential group preferences: A comparison of the internal validity of hierarchical information integration approaches     

Eric J.E. Molin  Harmen Oppewal  Harry J.P. Timmermans 《Journal of Geographical Systems》2002,4(4):343-358

 In this paper, two approaches for measuring residential group preferences, based on the method of Hierarchical Information Integration (HII), are compared. In particular, the hypothesis that group-based preference models estimated from integrated HII experiments better predict group preferences than part individual-based group models estimated from classical HII experiments is tested. To that effect, the models' ability to predict group preferences for new residential alternatives is compared in a study of residential preferences of co-ops. Results indicate that integrated HII group experiments indeed result in better predictions of residential preferences.  相似文献   

Geostatistical incorporation of spatial coordinates into supervised classification of hyperspectral data   总被引：1，自引：0，他引：1  

P. Goovaerts 《Journal of Geographical Systems》2002,4(1):99-111

 This paper presents a methodology to incorporate both hyperspectral properties and spatial coordinates of pixels in maximum likelihood classification. Indicator kriging of ground data is used to estimate, for each pixel, the prior probabilities of occurrence of classes which are then combined with spectral-based probabilities within a Bayesian framework. In the case study (mapping of in-stream habitats), accounting for spatial coordinates increases the overall producer's accuracy from 85.8% to 93.8%, while the Kappa statistic rises from 0.74 to 0.88. Best results are obtained using only indicator kriging-based probabilities, with a stunning overall accuracy of 97.2%. Significant improvements are observed for environmentally important units, such as pools (Kappa: 0.17 to 0.74) and eddy drop zones (Kappa: 0.65 to 0.87). The lack of benefit of using hyperspectral information in the present study can be explained by the dense network of ground observations and the high spatial continuity of field classification which might be spurious. Received: 12 April 2001 / Accepted: 7 September 2001  相似文献   

Exposure assessment using high spatial resolution hyperspectral (HSRH) imagery     

G.M. Jacquez  W. Andrew Marcus  Richard J. Aspinall  Dunrie A. Greiling 《Journal of Geographical Systems》2002,4(1):1-14

  相似文献   

Toward micro-scale spatial modeling of gentrification   总被引：1，自引：0，他引：1  

David O'Sullivan 《Journal of Geographical Systems》2002,4(3):251-274

 A simple preliminary model of gentrification is presented. The model is based on an irregular cellular automaton architecture drawing on the concept of proximal space, which is well suited to the spatial externalities present in housing markets at the local scale. The rent gap hypothesis on which the model's cell transition rules are based is discussed. The model's transition rules are described in detail. Practical difficulties in configuring and initializing the model are described and its typical behavior reported. Prospects for further development of the model are discussed. The current model structure, while inadequate, is well suited to further elaboration and the incorporation of other interesting and relevant effects. Received: 1 November 2001 / Accepted: 12 April 2002 Town centres data were made available by kind permission of the UK Department of the Environment, Transport and the Regions.  相似文献   

西霞院反调节水库控制网的布设及优化     

王保丰  丁万庆等 《测绘学院学报》2002,19(4):250-254

采取平面网与高程网相结合的方法布设了施工控制网，并引用工程控制网优化设计的有关理论，结合实际对平面网的网形进行了机助优化。在网形确定的基础上，文中采用可靠因子为质量指标对网中的观测量进行优化，最终得到了满足精度和可靠性要求的最优布设方案。  相似文献   

平坦地区转换GPS高程的混合转换方法   总被引：48，自引：0，他引：48  

胡伍生  华锡生  张志伟 《测绘学报》2002,31(2):128-133

简要介绍了转换GPS高程的二次曲面拟合法和神经网络方法。然而 ,这 2种方法都有缺点 ,介绍的CF&NNM方法充分利用了 2者的优点 ,通过 2个平坦地区的工程实例 ,证实该方法的有效性 ,并得到一些有工程应用价值的结论。  相似文献   

带权约束参数平差在工程控制网优化中的应用     

鲍峰  程效军 《测绘学报》2002,31(Z1):73-76

介绍用带权约束平差原理编制的工程控制网试验修正法设计和平差程序,并用于设计工程导线和平差变形观测控制网等实际工程的例子,据此提供一些结论和建议.  相似文献   

加密导线网平差程序的设计与实现     

艾松涛  黎展荣  张沛 《测绘信息与工程》2002,27(6):8-9

现在生产单位对于城市建设控制网的布设，倾向于首先布设GPS控制网，然后再以GPS点作为首级控制点，进行导线网加密，全面介绍了导线加密网的平差计算，据此编写了相关处理软件，并在实际生产应用中进行了验证。  相似文献   

3S技术在黑龙江省防汛指挥系统中的应用     

张建超 《测绘与空间地理信息》2002,25(3):68-69

文章简要介绍了黑龙江省防汛指挥系统建设的目标 ,论述了 3S技术是该系统应用的关键技术 ,以及展现了 3S技术在该系统应用的发展趋势。  相似文献   

IP网络技术的现状及其多媒体应用研究   总被引：1，自引：0，他引：1  

孙华怡  喻占武  李德仁  胡瑞敏 《武汉大学学报(信息科学版)》2002,27(6):652-656

介绍了IP网络的现状、实现方式以及发展趋势，并分析了基于IP网络的多媒体通信若干技术和应用。  相似文献