伪似然估计和剖面似然估计----伪似然估计:参考文献:Gong,G.,andSamaniego,F.J.(1981),"pseudoMaximumLikelihoodEstimation:TheoryandApplications,"TheAnnalsofStatistics,9,861-869,[1581].Tang,G.,Little,R.J.A.,andRaghunathan,T.E.(2003),“AnalysisofMultivariateMissingDataWithNonignorableN