Application of BP Neural Network Based on Matlab in Comprehensive Evaluation for Highway Network Planning

In this paper BP neural network based on matlab is inducted and applied in comprehensive evaluation for highway network planning. Network model is constructed through the training of the sample data (make sure weights and threshold).In this model,the internal relationship between input and output is determined objectively without the influence of the subjective factors. An application example is given that has proved the model is right and valid,the evaluation results should be more objective.