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arXiv 1012.1047stat.APstat.ME
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静态始发-目的地矩阵的贝叶斯统计推断方法

A Bayesian Statistical Approach for Inference on Static Origin-Destination Matrices

Luis Carvalho

摘要:

我们从一个正式的统计观点来解决静态OD矩阵估计的问题。我们采用了一种新的贝叶斯框架,开发了一类模型,明确投在研究区域的出行配置为随机变量。因此,经典的解决方案,从增长因子,重力,和最大熵模型被确定为特定的估计下提出的模型。我们发现,这些解决方案中的每一个通常只占一小部分的后验概率质量的合奏,然后我们认为,在推理的不确定性应传播到以后的分析或下一阶段的模型。我们还提出了替代的,更强大的估计和设计马尔可夫链蒙特卡罗抽样方案,以获得他们和执行其他类型的推断。我们提出了几个例子,展示了所提出的模型和方法,并强调如何将其他来源的数据纳入模型和推理的原则,非启发式的方式。

英文摘要:

We address the problem of static OD matrix estimation from a formal statistical viewpoint. We adopt a novel Bayesian framework to develop a class of models that explicitly cast trip configurations in the study region as random variables. As a consequence, classical solutions from growth factor, gravity, and maximum entropy models are identified to specific estimators under the proposed models. We show that each of these solutions usually account for only a small fraction of the posterior probability mass in the ensemble and we then contend that the uncertainty in the inference should be propagated to later analyses or next-stage models. We also propose alternative, more robust estimators and devise Markov chain Monte Carlo sampling schemes to obtain them and perform other types of inference. We present several examples showcasing the proposed models and approach, and highlight how other sources of data can be incorporated in the model and inference in a principled, non-heuristic way.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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