Study of evaluation model on the county economy based on BP neural network

For the shortage of the traditional evaluation methods of the county economy, this paper presents a new evaluation model on the county economy based on BP neural network. Firstly, it established an index system of evaluation on county economy. Secondly, it designed an evaluation model based on back propagation (BP) neural network. Finally, as the county economy of Guilin for example, we set up a five-grade evaluation standard and realize the simulation of BP neural network evaluation model by programming with MATLAB, and got the right evaluation results. The results confirm that the model is feasible and effective to evaluate the county economy, and it can be a reference to evaluate the county economy all over the country.