英文文献:Semiparametric insights into price dynamics in Tanzanian maize markets-坦桑尼亚玉米市场价格动态半参数洞察
英文文献作者:Ihle, Rico,von Cramon-Taubadel, Stephan
英文文献摘要:
Maize is a major staple food in Sub-Saharan Africa. Monthly maize prices in Tanzania are analyzed since the country is an important maize producer and exporter in East Africa. We analyze price transmission between the five most important urban regions of Tanzania between 2000 and 2008 which correspond to major maize production or consumption areas. We propose a novel method for the analysis. The semiparametric vector error-correction model allows the partial impact of the past deviations from price equilibria on current price changes to be potentially nonlinear. The nonparametric estimates of these partial influences suggest that they can be adequately modeled by linear functions.
玉米是撒哈拉以南非洲地区的主要主食。由于坦桑尼亚是东非重要的玉米生产国和出口国,因此对该国的月度玉米价格进行了分析。我们分析了2000年至2008年间坦桑尼亚五个最重要的城市区域之间的价格传导,它们对应着主要的玉米生产或消费地区。我们提出了一种新的分析方法。半参数向量误差修正模型允许过去价格均衡偏差对当前价格变化的部分影响是潜在的非线性。这些部分影响的非参数估计表明,它们可以用线性函数充分地建模。