Modeling Parametric Evolution in a Random Utility Framework
Modeling Parametric Evolution in a Random Utility Framework
复制标题
在随机效用框架中建模参数演化
DOI:
10.1198/073500104000000550
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发表时间:
2005
影响因子:
3
通讯作者:
F. Feinberg
中科院分区:
文献类型:
--
作者:
Jin Gyo Kim;U. Menzefricke;F. Feinberg
Random utility models have become standard econometric tools, allowing parameter inference for individual-level categorical choice data. Such models typically presume that changes in observed choices over time can be attributed to changes in either covariates or unobservables. We study how choice dynamics can be captured more faithfully by also directly modeling temporal changes in parameters, using a vector autoregressive process and Bayesian estimation. This approach offers a number of advantages for theorists and practitioners, including improved forecasts, prediction of long-run parameter levels, and correction for potential aggregation biases. We illustrate the method using choices for a common supermarket good, where we find strong support for parameter dynamics.