基于BP人工神经网络的北京城市人口预测

he population system was a very complicated nonlinear system, an accurate prediction of amounts of population would be helpful to the planning of emergency adapting. According to the statistics on amounts of population from 1980 to 2005, the population amounts of registered permanent residence at city and outskirts in Beijing were predicted with Artificial Neural Network of Matlab5.3 software, the result showed that error data were 6~7 ten thousand between prediction value and actual value in 2003、2004、2005, the error ratio was 1 percent compared with actual value, the forecasting result was more precise and effective. Finally, the prediction result showed that Amounts of population respective were 703.2、708.5、720.9、733.8、734.6 ten thousand in 2006、2007、2008、2009、2010。