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Spatial decision support system (SDSS) is based on geographic information system (GIS), and has the core model base. SDSS is a decisive system of facing objects space information and users which not only have analysis reserve and estimation for information, but also have information forecast and decision. This article has discussed complex product by using SDSS, and has designed the elementary model...
A new method, called OSR-BP neural network, for long-term runoff prediction is put forward in this thesis. In order to eliminate input multi-collinearity and phenomenon of overfitting of the neural network, optimal subset regression (OSR) and BackPropagation(BP) neural network is coupled to an integrated, meanwhile, the training and testing error is comprehensively considered to determine the best...
A city three-dimensional foundation information consultant system is developed based on random field theory to predict unknown geotechnical parameters. Taking the geographical information system (GIS) as development platform, the general structure module and database of the system is designed. By means of writing programs in Mapinfo, Visual Basic and Excel, dynamic multi-way inquiry, statistics can...
In order to improve the accuracy of spatial forecasting based on panel data, the significance of spatial autocorrelation on the panel data is tested by Moran I, the first-order spatial autoregressive model and the Kriging algorithm model are established from the perspective of the cross-sectional data, respectively, and back-propagation neural network model trained by the genetic algorithm is established...
Forest fires are devastating disasters, which are considered as the most serious disasters at the 21 century. When forest fires occur, ignition points have not yet developed for many unmanned area and away from the roads and railways. Therefore, precision positioning of the ignition point and fire-fighting forces and analysis of fires regional distribution are particularly important. In this paper,...
Land use/land cover change (LUCC) is an important content of geographical research on global change today, and urban land-use change is a complex dynamic and spatio-temporal process because city is not only the most concentrated region of mankind's activity, but also the most impressionable sapce interacts with the humanities factor and natural factor. Urbanization is focus of human and land's relation,...
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