三阶段DEA,在SFA回归后有一个LR test of the one-sided error检验,如果通过不了需要怎么调整,大家帮忙个点建议啊,是需要改环境变量还是要调整指标体系。我的样本9个,投入产出各2个,是不是样本量太小的原因。
the final mle estimates are :
coefficient standard-error t-ratio
beta 0 -0.28404642E+03 0.44548294E+01 -0.63761458E+02
beta 1 0.91432282E+03 0.41626073E+01 0.21965147E+03
beta 2 -0.16452175E+03 0.10734166E+02 -0.15326924E+02
beta 3 0.23200658E+03 0.32099629E+01 0.72277029E+02
beta 4 -0.95813368E+03 0.25490382E+01 -0.37588047E+03
sigma-squared 0.13822947E+07 0.10000003E+01 0.13822943E+07
gamma 0.99999808E+00 0.12717180E-04 0.78633633E+05
mu is restricted to be zero
eta is restricted to be zero
log likelihood function = -0.70737929E+02
LR test of the one-sided error = 0.35253034E+01
with number of restrictions = 1
[note that this statistic has a mixed chi-square distribution]