search for: cec1

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2024 Apr 23
1
System GMM yields identical results for any weighting matrix
...uot;, data=data1) OLSmat <- diag(diag(m0$residCov)); Wmat <- solve(OLSmat) # Choose the type of covariance matrix in GMM vc1 <- "MDS" vc1 <- "CondHom" vc1 <- "HAC" #vc1 <- "TrueFixed" # Choose between restricted and unrestricted estimation cec1=NULL # unrestricted cec1=3 # restrict the coefficient on the dummy to be equal across equations # Estimate the model with `sysGmm` using different weighting matrices: identity, "optimal" and manually specified m1a <- sysGmm(g=ES_g, h=ES_h, wmatrix="ident" , weightsMatrix...
2024 Apr 23
1
System GMM yields identical results for any weighting matrix
...$residCov)); Wmat <- solve(OLSmat) > > # Choose the type of covariance matrix in GMM > vc1 <- "MDS" > vc1 <- "CondHom" > vc1 <- "HAC" > #vc1 <- "TrueFixed" > > # Choose between restricted and unrestricted estimation > cec1=NULL # unrestricted > cec1=3 # restrict the coefficient on the dummy to be equal across > equations > > # Estimate the model with `sysGmm` using different weighting matrices: > identity, "optimal" and manually specified > m1a <- sysGmm(g=ES_g, h=ES_h, wmatrix=&quot...