主曲线方法在交通安全数据分析中的应用

针对交通安全数据的非参数性,将主曲线方法应用于交通安全数据分析.通过未知分布数据集的HS主曲线算法对交通安全数据进行分析后,得到一条通过数据集合中间的曲线,来描述该数据集合的特征,以此作为执行管理标准的依据.研究表明,交通安全数据集的主曲线能够较好的描述出数据本身所具有的非线性关系,可以作为执行管理标准的依据.

Application of Principal Curve to Data Analysis of Traffic Safety

On the basis of the nonparametric feature of traffic safety data, principal curve was applied to analyzing the tremendous traffic safety data in this paper. A curve getting across the middle of the data set was acquired through the analysis of traffic safety data by the HS principal curve algorithm of unknown distributed data set. Research result shows that the principal curve, passing through the middle of traffic safety data set, can well describe non-linearity of those data, and can be regarded as the reference of performing management standards. Furthermore, a practical case shows that principal curve has a promising application in traffic safety.