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Development and estimation of a semi-compensatory model with a flexible error structure

机译:具有误差结构的半补偿模型的开发和估计

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In decisions involving many alternatives, such as residential choice, individuals conduct a two-stage decision process, consisting of eliminating non-viable alternatives and choice from the retained choice set. In light of the potential of semi-compensatory discrete choice models to mathematically represent such decisions, research is inching ahead with the aim of alleviating their high computational complexity and their severe restrictive assump tions. To date, still a major barrier for the implementation of semi-compensatory models is their underlying assumption of independently and identically distributed error terms across alternatives at the choice stage. This study relaxes the assumption by introducing nested substitution patterns and alternatively random taste heterogeneity at the choice stage, thus equating the structural flexibility of semi-compensatory models to their com pensatory counterparts. The proposed model is applied to off-campus rental apartment choice by students. Results show the feasibility and importance of introducing a flexible error structure into semi-compensatory models.
机译:在涉及许多选择的决策(例如居住选择)中,个人执行两个阶段的决策过程,包括消除不可行的选择和从保留的选择集中进行选择。鉴于半补偿离散选择模型在数学上可以代表此类决策的潜力,因此,为减轻其高计算复杂性和严格的限制性假设而进行的研究正处于领先地位。迄今为止,实现半补偿模型的一个主要障碍是在选择阶段,它们对跨替代方案独立且均等分布的误差项的基本假设。这项研究通过在选择阶段引入嵌套替换模式和随机味异质性来放松假设,从而将半补偿模型的结构灵活性等同于其对等补偿模型。提议的模型适用于学生选择的校外出租公寓。结果表明将柔性误差结构引入半补偿模型的可行性和重要性。

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