With the intensive progress of railway informat ization, the need of study on auotmation of railway classification shunting operation,especially the integration of primary sub-administration day plan and train consist has become increasingly urge.

The results showed that,prediction accuracy of central segregation model is 90%,which meet the demand of prediction of central segregation well.

Analysis of medium and long term hydrological forecast precisionbased on BP network;

The indi cation of forecast analysis for China′s fiscal expenditures, the combination of the two kinds of models can raise the forecast precision.

A new method of avoiding typhoon based on the forecast accuracy;

The example verifies that the method can raise the fitting and forecast accuracy of the deformation model.

According as the long - term flood qualitative and quantitative forecasting in the flood season issued in the springtime of 2001, and the validated by actually happening, the paper sum-marizes 10 methods to raise forecast accuracy and probes how to make out the long term drought and water logging forecast for the future.