Projection pursuit regression car-following model

The car-following model is a basic model of microcosmic traffic simulation.Although the representative problems consisted in former models are solved preferably by the car-following model based on nonparametric regression arithmetic,the phenomenon of "dimension curse"has appeared following the increase of the sample dimension.A car-following model based on the projection pursuit regression which can solve "dimension curse" and non-normality among high-dimensions data is established.Supposition is not to be made and PPR model is established through scanning and analyzing the data structures directly.So,the information consisted in the data can be extracted adequately and the model which accords with actual situation has high precision.The algorithm is feasible through the field data test.