基于核查区的居民出行OD矩阵校核方法

来源 :交通运输工程学报 | 被引量 : 0次 | 上传用户:qf0909
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为提高居民出行调查数据校核精度,按照组团状城市所布设的核查线可围合成若干封闭区域的特点,依据极大熵原理,提出了基于核查区的居民出行OD矩阵校核方法,量化分析了核查区进出交通量与OD矩阵分布量、核查区OD量与路段交通量之间的关系。以此为约束,按照核查线路段和核查区两个方面的观测值与估算值之间差异最小化为目标,建立了相应的模型及其算法,并应用2008年西安市居民出行调查数据对该方法进行了验证。计算结果表明:经校核后,519个交通小区的机动车出行OD矩阵分配量与观测交通量之间的平均相对误差为4.75%,误差最大值为12.28%,因此该方法可行。 In order to improve the checking accuracy of residents ’travel survey data, according to the verification line arranged by the group-like cities, the characteristics of several enclosed areas can be encircled, and based on the principle of maximum entropy, a checking method of OD matrixes for residents’ travel based on the verification area is proposed. The verification area into and out of traffic and OD matrix distribution, check the amount of OD and the relationship between road traffic. Taking this as a constraint, aiming at minimizing the discrepancy between the observed value and the estimated value in the two sections of the verification route section and the verification area, a corresponding model and an algorithm are established, and based on the survey data of residents’ travels in Xi’an in 2008, Method has been verified. The calculation results show that after checking, the average relative error between the distribution of traffic matrix and traffic volume is 4.75% and the maximum error is 5%. Therefore, this method is feasible.
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