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Based on TM remote sensing images in 1989, 2000 and 2008, combining with GIS technology, and the city of Beijing's land use change characteristics in the past 20 years from 2008 will be analyzed. The indicators such as single land use dynamics, land utilization classification index and land use transfer matrix will be used to reveal the changes on range, speed and direction of this study area. On...
In this paper, we have established one credit risk evaluation model based on learning vector quantization respectively. This model is used to identify two patterns samples of Chinese listed companies, including training samples of 285 listed companies (59 companies with special treatment and 226 normal companies) and test samples of 117 listed companies(29 companies with special treatment and 88 normal...
In this paper, we study the theory of generalized regression neural networks, a kind of radial basis network that is often used for function approximation, and apply it for the forecasting of the Shanghai composite index of the Chinese stock market. The raw data consists of 4245 observations of daily closing values of the Shanghai Composite Index spanning the trading dates December 19, 1990 to April...
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