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有哪位大侠会分析frontier的结果。我做的是利用面板数据,最后的效率估计有什么用?
the final mle estimates are :
coefficient standard-error t-ratio
beta 0 -0.20734757E+01 0.16027835E+00 -0.12936717E+02
beta 1 0.93275282E+00 0.15559295E-01 0.59948271E+02
beta 2 0.18729493E+00 0.26996272E-01 0.69378072E+01
sigma-squared 0.46659503E-01 0.12917702E-01 0.36120591E+01
gamma 0.82186069E+00 0.52840561E-01 0.15553595E+02
mu is restricted to be zero
eta is restricted to be zero
log likelihood function = 0.32602982E+03
LR test of the one-sided error = 0.16702294E+03
with number of restrictions = 1
[note that this statistic has a mixed chi-square distribution]
number of iterations = 15
(maximum number of iterations set at : 100)
number of cross-sections = 29
number of time periods = 13
total number of observations = 377
thus there are: 0 obsns not in the panel
covariance matrix :
0.25689149E-01 0.84039641E-03 -0.36409689E-02 -0.69159258E-03 -0.30259482E-02
0.84039641E-03 0.24209166E-03 -0.33070641E-03 -0.55356918E-04 -0.23456927E-03
-0.36409689E-02 -0.33070641E-03 0.72879872E-03 0.14330479E-03 0.61614318E-03
-0.69159258E-03 -0.55356918E-04 0.14330479E-03 0.16686702E-03 0.65926741E-03
-0.30259482E-02 -0.23456927E-03 0.61614318E-03 0.65926741E-03 0.27921249E-02
technical efficiency estimates :
firm eff.-est.
1 0.81476200E+00
2 0.90994925E+00
3 0.98895747E+00
4 0.93124280E+00
5 0.90206936E+00
6 0.78398841E+00
7 0.81432236E+00
8 0.98162622E+00
9 0.96002427E+00
10 0.89816609E+00
11 0.89601380E+00
12 0.74095180E+00
13 0.96201988E+00
14 0.82338130E+00
15 0.75619819E+00
16 0.75144803E+00
17 0.84748535E+00
18 0.85325055E+00
19 0.87050236E+00
20 0.94947966E+00
21 0.82307379E+00
22 0.86797875E+00
23 0.63745545E+00
24 0.72238656E+00
25 0.81966283E+00
26 0.85280224E+00
27 0.85771505E+00
28 0.85185768E+00
29 0.79188893E+00
mean efficiency = 0.85036760E+00
谢谢哦。