Quasi‐ and Simulated‐Likelihood Approaches to Censored Demand Systems: Food Consumption by Food Stamp Recipients in the United States
提出拟最大似然估计法，应用于美国食品券受助者样本的删失Translog需求系统，发现该方法与模拟最大似然法估计的参数和弹性非常接近，而两步法结果不同；猪肉和鱼需求价格弹性大，其他食品缺乏弹性，交叉价格效应弱于自身价格和总食品支出效应。
A quasi‐maximum‐likelihood estimator is proposed and applied to a censored Translog demand system for foods, using a sample of food stamp recipients in the United States. The procedure produces remarkably close parameter and elasticity estimates to those of the simulated‐maximum‐likelihood procedure. A two‐step procedure is also considered but it produces different elasticities. Demands are found to be price elastic for pork and fish but price inelastic for all other food products. Gross complementarity and net substitutability are obvious but these cross‐price effects are much less pronounced than own‐price and total food expenditure effects.