Herein, a weibit-based model is proposed as an alternative to Recker's logit choice model with an “oddball” alternative, which explicitly focuses on a single alternative that has unique attributes to other conventional alternatives in the choice set [Recker, W.W. (1995). Discrete choice with an oddball alternative. Transportation Research, 29B, 201–212]. While retaining the closed-form probability expression, the proposed model handles the oddball alternative using a multiplicative random disutility function assuming Weibull distributed random components. The proposed model thus allows disutility-dependent perception variances of both the conventional and oddball alternatives and a flexible variance ratio between them, which are effective to reflect the way how individuals perceive varying magnitudes of travel disutility from different attributes. This gives the proposed model more flexibility to consider various heterogeneity issues, including the heterogeneous perceptions of conventional alternatives, heterogeneous perceptions of unique and common attributes of the oddball alternative, and heterogeneous features of conventional and oddball alternatives. The empirical application of the proposed model is explored to highlight its practical performance. The results demonstrate the superiority of the proposed model in the choice contexts where both oddball effect and heterogeneity issues need to be considered. The proposed model could further provide new behavioral insights into various decision-making scenarios of transportation networks, such as transportation mode choices in the current era of emerging technologies and destination choices in urban agglomerations.

在此，提出了基于 weibit 的模型作为 Recker 的 logit 选择模型的替代方案，该模型具有“奇怪”的替代方案，该模型明确关注与选择集中的其他常规替代方案具有独特属性的单一替代方案 [ Recker, WW (1995) 。离散的选择和奇怪的选择。交通研究，29B，201-212 ]。在保留封闭式概率表达式的同时，所提出的模型使用假设威布尔分布随机分量的乘法随机负效用函数来处理奇怪的替代方案。因此，所提出的模型允许传统和奇怪的替代方案的依赖于负效用的感知方差以及它们之间的灵活方差比，这有效地反映了个体如何感知不同属性的不同程度的旅行负效用的方式。这使得所提出的模型更加灵活地考虑各种异质性问题，包括传统替代品的异质感知、奇怪替代品的独特和共同属性的异质感知，以及传统和奇怪替代品的异质特征。对所提出模型的实证应用进行了探索，以突出其实际性能。结果证明了所提出的模型在需要考虑奇怪效应和异质性问题的选择环境中的优越性。所提出的模型可以进一步为交通网络的各种决策场景提供新的行为见解，例如当前新兴技术时代的交通方式选择和城市群的目的地选择。