应用EMD方法分析交通流量的动态特性

Analyzing the Dynamic Characteristic of the Traffic Flow Using the EMD Method

经验模态分解(EMD)方法是一种新型的数据分析方法。将EMD方法应用于交通网络流量分析,从空间上对网络交通流量进行研究,通过数学分析来探讨交通流量在网络条件下的动态特性,初步分析了在复杂的交通分布情况下不同路线长度的交通情况所产生的交通流量所占的比例,并寻找网络中的交通流量产生的主要线路以及关键节点。结果表明,在交通网络中,以相邻城市作为起始点的短距离交通所产生的交通流量占据了整个网络交通流量的主要部分。

The empirical mode decomposition （EMD） method is a new method for analyzing data. EMD is used to analyze traffic flow in complex networks. Studying spacial traffic flow in networks and using mathematical analysis to discuss the dynamical properties of these traffic flow, the proportions of traffic flow under different route length are preliminary studied to find main routes and notes. Results indicate that the traffic flow, formed between neighboring cities, takes main proportion in the network system and mainly distributes in the several important routes.