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Econometric essays on specification ...
~
Sulgham, Anil Kumar.
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Econometric essays on specification and estimation of demand systems.
紀錄類型:
書目-電子資源 : Monograph/item
正題名/作者:
Econometric essays on specification and estimation of demand systems./
作者:
Sulgham, Anil Kumar.
面頁冊數:
101 p.
附註:
Source: Dissertation Abstracts International, Volume: 67-12, Section: A, page: 4636.
Contained By:
Dissertation Abstracts International67-12A.
標題:
Economics, Agricultural. -
電子資源:
http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3244995
Econometric essays on specification and estimation of demand systems.
Sulgham, Anil Kumar.
Econometric essays on specification and estimation of demand systems.
- 101 p.
Source: Dissertation Abstracts International, Volume: 67-12, Section: A, page: 4636.
Thesis (Ph.D.)--Louisiana State University and Agricultural & Mechanical College, 2006.
This dissertation focuses on two research themes related to econometric estimation of linear almost ideal demand systems (LAIDS) for U.S. meats. The first theme addresses whether nonstationarity (unit-roots and cointegration) contributes to a dynamic specification of LAIDS models. The results of the effect of nonstationarity are reported in two case studies. The second theme explores the relationship between age and household size with budget shares to specify semiparametric LAIDS model. The results are reported in a third case study that compares parametric and semiparametric models estimates of price and expenditure elasticities.Subjects--Topical Terms:
626648
Economics, Agricultural.
Econometric essays on specification and estimation of demand systems.
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Source: Dissertation Abstracts International, Volume: 67-12, Section: A, page: 4636.
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This dissertation focuses on two research themes related to econometric estimation of linear almost ideal demand systems (LAIDS) for U.S. meats. The first theme addresses whether nonstationarity (unit-roots and cointegration) contributes to a dynamic specification of LAIDS models. The results of the effect of nonstationarity are reported in two case studies. The second theme explores the relationship between age and household size with budget shares to specify semiparametric LAIDS model. The results are reported in a third case study that compares parametric and semiparametric models estimates of price and expenditure elasticities.
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The first case study conducts a comparative analysis of elasticity estimates from static and dynamic LAIDS models. Historical meat consumption data (1975:1-2002:4) for beef, pork and poultry products were used. Hylleberg et al. (1990) seasonal unit roots tests were conducted. Unit roots and cointegration analysis lead to the specification of an ECM of the Engle-Granger type for the LAIDS model. Marshallian and compensated elasticities were generated from the static and dynamic LAIDS models. The study found some model differences in elasticity estimates and rejected homogeneity in the dynamic model.
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The second case study evaluates the forecasting performance of static and dynamic LAIDS models. Forecast evaluation was based on mean square error (MSE) criteria and recently developed MSE-tests. The study found ECM-LAIDS model performs uniformly better under all forecasting horizons for the beef equation. However, in the case of the pork equation the static model performed better in one-step-ahead and two-step-ahead forecasting horizons while the dynamic model was superior in the three-step-ahead and four-step-ahead forecasting horizons using MSE comparisons. In testing, only the two-steps ahead was superior for pork.
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The third case study specifies a semiparametric LAIDS model that maintains the linearity assumption of prices and total expenditures and allows nonparametric effects of age and household size. 2003 U.S. Consumer Expenditure Survey data for four meat products (beef, pork, poultry and seafood) were used in the study. Model fit and elasticity estimates revealed negligible differences exist between parametric and semiparametric models.
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