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MixedLogit模型随机参数分布形式选择探讨

, PP. 122-125

Keywords: MixedLogit模型,分布函数,方式划分

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Abstract:

MixedLogit模型参数的分布形式的选择对模型物理意义的阐释和模型的实际应用均有十分重要的影响。选取正态分布、对数正态分布和均匀分布3种代表性分布函数进行分析,以Daganzo1979年应用Logit模型进行交通方式划分模型标定所采用的原始数据进行试验研究,并将试验结果与Logit模型结果进行对比。研究结果表明MixedLogit模型对原始数据的拟合性更好;3种分布函数分别适应于不同特点的参数;MixedLogit具有更为丰富的物理意义,对个人选择交通方式的偏好信息表达更为清晰。

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