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It is useful to exactly forecast the tourism passenger in tourism layout and management. The linear regression model is often used in passenger in tourism layout. But its precision is worth discussing. Quantitative analysis is made to the four forecast models in a case study of the tourism passenger of Gansu province. The research suggests that the linear regression model has the lowest precision...
The connotation of BP neural network algorithm and code was introduced. The construction of expert system for forecasting the incidence rate of pulmonary emphysema based on BP neural network was discussed. Methods The data of incidence rate of pulmonary emphysema and meteorological factors in plateau section from 2003 to 2009 were collected and analyzed by using Eviews for windows, version 3.1; the...
China is one of the countries in the world that suffer serious natural disasters. Frequent and serious biological disasters cause great damage to crop production. The plant disease data of multiform could be analyzed and then a forecasting report was made.This article according to characteristic of the plant disease, introduced forecasts system's design and key technologies realization based on data...
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