文章基本信息

标题：Detecting Technological Heterogeneity in New York Dairy Farms
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作者：del Corral, Julio ; Alvarez, Antonio ; Tauer, Loren W. 等
期刊名称：Journal of Food Distribution Research
印刷版ISSN：0047-245X
出版年度：2009
卷号：40
期号：4
出版社：Food Distribution Research Society
摘要：Agricultural studies have often differentiated and estimated different technologies within a sample of farms. The common approach is to use observable farm characteristics to split the sample into several groups and subsequently estimate different functions for each group. Alternatively, unique technologies can be determined by econometric procedures such as latent class models. This paper compares the results of a latent class model with the use of a priori information to split the sample using dairy farm data in the application. Latent class separation appears to be a superior method of separating heterogeneous technologies.
关键词：parlor milking system;stanchion milking system;latent class model;stochastic frontier