泊松自回归模型假设到达过程为期望与方差相等的泊松分布,但事实上真正的数据生成过程中的到达过程的方差既可以高于期望也可以低于期望.本文提出了基于Katz到达过程(Katz arrivals)的计数数据自回归模型(INAR-Katz:integer valued auto...泊松自回归模型假设到达过程为期望与方差相等的泊松分布,但事实上真正的数据生成过程中的到达过程的方差既可以高于期望也可以低于期望.本文提出了基于Katz到达过程(Katz arrivals)的计数数据自回归模型(INAR-Katz:integer valued autoregressive process with Katz arrivals).并采用蒙特卡罗模拟方法(Monte Carlo simulations)比较了INAR-Katz模型在矩估计以及极大似然估计下的估计准确程度.最后采用INAR-Katz模型对患呼吸系统疾病的急诊就诊人数进行建模,结果显示INAR-Katz模型优于普通泊松模型、PAR模型,具有很好的应用前景.展开更多
Based on China’s 36 industries panel data in the period of 1992 and 2002, making use of panel data regression and Hausman test, we tested the modified Shengbin(2002) model. The result suggests that the endogenous tar...Based on China’s 36 industries panel data in the period of 1992 and 2002, making use of panel data regression and Hausman test, we tested the modified Shengbin(2002) model. The result suggests that the endogenous tariff theory also exist in China. The mixed model is better than the “national benefit model” and “the special interest group model”. China’s nominal tariff protest structure is affected by both “the national benefit” and “the special interest group”.展开更多
基金国家自然科学基金(the National Natural Science Foundation of China under Grant No.69674012)重庆市科委自然科学基金(the Natu-ral Science Foundation of CQ CSTC under Grant No.2006BA6016)
文摘泊松自回归模型假设到达过程为期望与方差相等的泊松分布,但事实上真正的数据生成过程中的到达过程的方差既可以高于期望也可以低于期望.本文提出了基于Katz到达过程(Katz arrivals)的计数数据自回归模型(INAR-Katz:integer valued autoregressive process with Katz arrivals).并采用蒙特卡罗模拟方法(Monte Carlo simulations)比较了INAR-Katz模型在矩估计以及极大似然估计下的估计准确程度.最后采用INAR-Katz模型对患呼吸系统疾病的急诊就诊人数进行建模,结果显示INAR-Katz模型优于普通泊松模型、PAR模型,具有很好的应用前景.
文摘Based on China’s 36 industries panel data in the period of 1992 and 2002, making use of panel data regression and Hausman test, we tested the modified Shengbin(2002) model. The result suggests that the endogenous tariff theory also exist in China. The mixed model is better than the “national benefit model” and “the special interest group model”. China’s nominal tariff protest structure is affected by both “the national benefit” and “the special interest group”.
