Limited by the poor GPS locating precision, it is quite difficult to implement map matching and path deriving procedures in the parallel road network by FCD (floating car data) technology, which affects the traffic information accuracy directly. On the basis of existing FCD information processing framework, some approaches were applied to improve map matching performance. And then, the freeway and service road paths were both viewed as vehicle trajectories, so as to reduce the probability of inaccurate path deriving effectively. Finally, the evidential reasoning framework was introduced to address the information unlikelihood and information conflict issues after the path selecting strategy adjustment. Contrast experiment shows that the traffic information accuracy on freeway and service road was improved about 14.26% and 9.46% respectively after employing our modified model.
Wu D D, Zhu T Y, Lü W F, et al. A heuristic map-matching algorithm by using vector-based recognition Proc of the International Multi-Conference on Computing in the Global Information Technology (ICCGI’07). Piscataway,NJ:IEEE,2007:18-24
������,��ͮ��,Ѧ��,��. һ�ֽ�ͨ��Ϣ�ںϴ�������ϵͳ:�й�.200610168271 . 2006-06-06 Lü Weifeng, Zhu Tongyu, Xue Ming, et al. A traffic information fusion processing method and system:China.200610168271 . 2006-06-06(in Chinese) ��
Dempster A P. Upper and lower probabilities induced by a multivalued mapping[J].Annals of Mathematical Statistics.1967,38(2):325-339
Vapnik V N. The nature of statistical learning theory[M]. New York: Springer-Verlag,1995:138-141
������.������ͨ��Ϣ�ںϼ�������Ӧ��[M].����:�й�����������,2005:134-141 Yang Zhaosheng. Traffic information fusion technology and application[M]. Beijing: China Railway Publishing House,2005:134-141(in Chinese)
�ջ���,����,����,��.����D-S֤�����۵�GPS/MM���ϵͳ������λ�㷨[J].�������պ����ѧѧ��,2001,27(2):157-160 Su Huimin, Zhou Peng, Chen Zhe, et al. Study of GPS/MM integrated navigation system for vehicle positioning based on D-S evidence reasoning[J]. Journal of Beijing University of Aeronautics and Astronautics,2001,27(2):157-160 (in Chinese)
�α�,ëʿ��,����Ϊ,��.����֤�ݷ����DS֤�ݺϳɼ��о�����[J].��������Ϣѧ��,2002,24(7):894-899 He Bing, Mao Shiyi, Zhang Youwei, et al. Evidence combination and decision based on DS evidence theory and evidence classification[J]. Journal of Electronics and Information Technology,2002,24(7):894-899 (in Chinese)