机器学习在列车精确停车问题的应用.pdfVIP

226 2010 ，46 （25 ） Computer Engineering and Applications 计算机工程与应用 机器学习在列车精确停车问题的应用 1，2 2 周 骥 ，陈德旺 ZHOU Ji1，2 ，CHEN De-wang2 1.复旦大学 计算机科学技术学院，上海 200433 2.北京交通大学 轨道交通控制与安全国家重点实验室，北京 100044 1.School of Computer Science ，Fudan University ，Shanghai 200433 ，China 2.State Key Lab of Rail Traffic Control and Safety ，Beijing Jiaotong University ，Beijing 100044，China ZHOU Ji ，CHEN De-wang.Applications of machine learning methods in problem of precise train stopping.Computer Engineering and Applications ，2010 ，46 （25 ）：226-230. Abstract ：Precise train stopping is one of the key technologies of automatic train control system.Traditional technologies of precise train stopping depend on complicated physical model and expensive sensor equipment ，and it is hard to achieve high precision.The data themselves are utilized ，applying Gaussian process regression and Boosting regression in the filed of ma- chine learning ，to study the problem of precise train stopping.The above methods are compared with linear regression.It is shown in the experiment that ，the methods of machine learning are effective to the problem of precise train stopping.Gauss- ian process regression attains the best performance compared with the other methods.Gradient-based Boosting regression ，with its performance approximating to that of Gaussian process regression in the lack of prior knowledge ，demonstrates its flexibili- ty and adaptability in practical applications. Key words ：precise train stopping ；Gaussian process ；Boosting ；regression 摘 要：列车精确停车是实现轨道交通自动控制系统的关键技术之一。传统的精确停车技术需要依赖于复杂的物理模型及昂贵 的传感设备，且难以达到较高的精度。从数据本身出发，利用机器学习中高斯过程回归和Boosting 回归算法对列车精确停车问 题进行了研究，并与线性回归方法进行了比较，实验表明，机器学习的方法对于解决列车精确停车问题是行之有效的。其中以高 斯过程回归的性能最优，而基于梯度的Boosting 回归方法在缺乏先验知识的条件下达到接近高斯过程回归的性能，在实际应用 中具有更大的灵活性和适应性。 关键词：列车精确停车；高斯过程；Boosting ；回归 DOI ：10.3778/j.issn. 1002-8331.2010.25.066 文章编号：1002-8331（2010 ）25-0226-05 文献标识码：Ａ 中图分类号：TP391 1 简介