[求助]求教DEA的问题

宝宝瓶子

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收藏 2008-03-18

关于DEA的问题：

我用DEAP2.1软件做panal data，测中国30个省（剔除西藏）1998-2006的R&D国际化效率水平，投入产出分别两个，但做出的结果中有的没有数值，而是显示unbounded objective function,INF,-NAN，各位大虾们知道这是为什么吗？要怎么解决呢？跪谢阿~

下面是结果中的一部分：

Results from DEAP Version 2.1

Instruction file = 1.ins
Data file = 1.dta

Output orientated Malmquist DEA

Unbounded objective function

……
Unbounded objective function

DISTANCES SUMMARY

year = 1

   firm      crs te rel to tech in yr      vrs
    no.      ************************       te
              t-1         t       t+1

     1     0.000     0.240     0.352     0.589
     2     0.000     0.334     0.747     1.000
     3     0.000     0.000     0.266     0.727
     4     0.000     0.000     0.370     0.942
     5     0.000     0.415     0.290     0.547
     6     0.000     0.640     0.338     1.000
     7     0.000     0.414     0.187     0.464
     8     0.000     0.764     0.675     1.000
     9     0.000     0.000     0.548     1.000
    10     0.000     0.411     0.494     1.000
    11     0.000     0.489     0.527     1.000
    12     0.000     0.000     0.278     0.680
    13     0.000     0.355     0.732     1.000
    14     0.000     0.553     0.539     1.000
    15     0.000     0.000     0.414     1.000
    16     0.000     0.117     0.396     0.506
    17     0.000     0.285     0.446     0.661
    18     0.000     1.000     1.094     1.000
    19     0.000     0.567     0.619     1.000
    20     0.000     0.000     1.598     1.000
    21     0.000     1.000     0.387     1.000
    22     0.000     0.206     0.305     0.419
    23     0.000     1.000     0.646     1.000
    24     0.000     1.000     5.736     1.000
    25     0.000     1.000     0.499     1.000
    26     0.000     1.000     1.386     1.000
    27     0.000     0.000    11.732     0.489
    28     0.000     0.000Inf            1.000
    29     0.000     1.000     0.856     1.000
    30     0.000     0.000     0.000     0.000

mean 0.000 0.426Inf 0.834

……

MALMQUIST INDEX SUMMARY

……
year = 3

   firm   effch techch    pech    sech   tfpch

     1   1.020   3.315   1.000   1.020   3.380
     2   1.515   1.850   1.068   1.419   2.803
     3   0.586   1.720   1.350   0.434   1.009
     4   1.081   1.073   0.839   1.288   1.160
     5   0.323   2.479   0.643   0.502   0.800
     6   0.733   1.020   0.681   1.077   0.748
     7   0.226   2.125   0.678   0.333   0.480
     8   0.335   1.399   0.491   0.682   0.468
     9   0.660   1.654   1.000   0.660   1.091
    10   0.918   1.215   0.883   1.040   1.116
    11   0.638   1.693   1.000   0.638   1.079
    12   0.605   1.620   0.605   1.001   0.981
    13   0.776   1.222   0.814   0.953   0.948
    14   1.089   1.420   0.855   1.273   1.546
    15   0.493   2.054   0.517   0.955   1.013
    16   0.846   1.472   1.009   0.839   1.246
    17   0.491   1.378   0.643   0.764   0.677
    18   0.412   1.925   0.475   0.868   0.793
    19   0.514   2.107   1.000   0.514   1.083
    20   0.123   3.123   0.280   0.440   0.385
    21   0.241   0.000   0.281   0.857   0.000
    22   0.882   1.505   0.700   1.260   1.327
    23   0.750   1.933   0.917   0.818   1.449
    24   1.005   4.955   1.000   1.005   4.982
    25   0.188   3.738   0.231   0.812   0.702
    26   0.227   1.806   1.000   0.227   0.409
    27   0.173   0.000   0.144   1.205   0.000
    28-NaN    -NaN    -NaN    -NaN    -NaN
    29   0.141   1.704   0.246   0.573   0.240
    30   0.000-NaN       0.000-NaN    -NaN