Efficient estimation in a non-proportional hazards model in survival analysis
研究了一个非比例风险回归模型，其中结构参数为回归系数向量，干扰参数为任意高维向量，建立了联合估计量的渐近分布、有效性和一致性。
A non-proportional hazards regression model is considered in which the structural parameter is the vector of regression coefficients and the nuisance parameter is a vector of arbitrarily high dimension. The asymptotic distribution as well as the efficiency and consistency of jointly (implicitly) defined estimators of the structural and nuisance parameters of the model are established.