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分类依据与纠错

AI 根据所提供的论文材料归类:摘要从效用树结构推导消费需求的价格系数限制,并解释两阶段预算安排,直接对应结构性需求模型的研究。

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关注这篇论文的作者
Robert H. Strotz

效用树的经验含义

研究问题
若效用函数按食品、衣着等商品分支组成效用树,会对需求函数的价格系数施加哪些可观察限制,并如何解释分阶段预算安排?
方法与思路
作者设定各商品分支的子效用进入总体效用函数,推导需求价格系数的限制及分支价格指数,并讨论先分配分支预算、再选择分支内商品的决策。
材料陈述的贡献
摘要称,效用树假设产生有经验含义的价格系数限制,并为分支价格度量和两阶段预算提供理论解释;文中未对这些限制作统计检验。
阅读关注点
读全文应核对效用树的具体结构、价格系数限制与价格指数的推导条件,以及分支内独立决策成立的范围和可检验含义。
阅读边界
摘要把常见预算行为与假设的一致性作为支持,但明确未作统计检验;仅凭摘要不能判断该结构在数据中是否成立或排除其他解释。

原文摘要

The hypothesis considered is that the utility function can be written as U U[VA (qai , * **, qX**, VM(q?1 , , q.,)], where the V's are utility functions depending on quantities of different commodities assigned to different branches (e.g., food, clothing). This hypothesis implies certain empirically meaningful and interesting conditions on the price coefficients of the demand functions. These conditions are, however, not subjected here to statistical test. A price index formula is next developed for measuring branch prices (e.g., the price of food, the price of clothing) and with the use of these indices a rationale is found for the individual doing his budgeting by first deciding how to allocate expenditure among the several branches and then making independent decisions as to how best to spend each branch allocation on the commodities within the branch. That this budgeting practice is both familiar and consistent with the proposed hypothesis is taken as evidence in support of the hypothesis and, therefore, of the implications for the price coefficients in demand functions.

笔记与分组
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